✓ Mark Two Sum completed Two Sum Solve ↗ ✓ Mark Best Time to Buy and Sell Stock completed Best Time to Buy and Sell Stock Solve ↗ ✓ Mark Longest Substring Without Repeating Characters completed Longest Substring Without Repeating Characters Solve ↗ ✓ Mark LRU Cache completed LRU Cache Solve ↗ ✓ Mark Number of Islands completed Number of Islands Solve ↗ ✓ Mark Trapping Rain Water completed Trapping Rain Water Solve ↗ ✓ Mark 3Sum completed 3Sum Solve ↗ ✓ Mark Add Two Numbers completed Add Two Numbers Solve ↗ ✓ Mark Container With Most Water completed Container With Most Water Solve ↗ ✓ Mark Copy List with Random Pointer completed Copy List with Random Pointer Solve ↗ ✓ Mark Course Schedule completed Course Schedule Solve ↗ ✓ Mark Generate Parentheses completed Generate Parentheses Solve ↗ ✓ Mark Group Anagrams completed Group Anagrams Solve ↗ ✓ Mark Jump Game completed Jump Game Solve ↗ ✓ Mark Koko Eating Bananas completed Koko Eating Bananas Solve ↗ ✓ Mark Longest Common Prefix completed Longest Common Prefix Solve ↗ ✓ Mark Longest Consecutive Sequence completed Longest Consecutive Sequence Solve ↗ ✓ Mark Longest Palindromic Substring completed Longest Palindromic Substring Solve ↗ ✓ Mark Maximum Subarray completed Maximum Subarray Solve ↗ ✓ Mark Median of Two Sorted Arrays completed Median of Two Sorted Arrays Solve ↗ ✓ Mark Merge Intervals completed Merge Intervals Solve ↗ ✓ Mark Merge k Sorted Lists completed Merge k Sorted Lists Solve ↗ ✓ Mark Merge Sorted Array completed Merge Sorted Array Solve ↗ ✓ Mark Palindrome Number completed Palindrome Number Solve ↗ ✓ Mark Product of Array Except Self completed Product of Array Except Self Solve ↗ ✓ Mark Reorganize String completed Reorganize String Solve ↗ ✓ Mark Rotting Oranges completed Rotting Oranges Solve ↗ ✓ Mark Search in Rotated Sorted Array completed Search in Rotated Sorted Array Solve ↗ ✓ Mark Subarray Sum Equals K completed Subarray Sum Equals K Solve ↗ ✓ Mark Top K Frequent Elements completed Top K Frequent Elements Solve ↗ ✓ Mark Valid Parentheses completed Valid Parentheses Solve ↗ ✓ Mark Word Ladder completed Word Ladder Solve ↗ ✓ Mark 4Sum completed 4Sum Solve ↗ ✓ Mark Analyze User Website Visit Pattern completed Analyze User Website Visit Pattern Solve ↗ ✓ Mark Asteroid Collision completed Asteroid Collision Solve ↗ ✓ Mark Best Time to Buy and Sell Stock II completed Best Time to Buy and Sell Stock II Solve ↗ ✓ Mark Binary Tree Maximum Path Sum completed Binary Tree Maximum Path Sum Solve ↗ ✓ Mark Binary Tree Right Side View completed Binary Tree Right Side View Solve ↗ ✓ Mark Binary Tree Zigzag Level Order Traversal completed Binary Tree Zigzag Level Order Traversal Solve ↗ ✓ Mark Climbing Stairs completed Climbing Stairs Solve ↗ ✓ Mark Coin Change completed Coin Change Solve ↗ ✓ Mark Concatenated Words completed Concatenated Words Solve ↗ ✓ Mark Contains Duplicate completed Contains Duplicate Solve ↗ ✓ Mark Course Schedule II completed Course Schedule II Solve ↗ ✓ Mark Create Hello World Function completed Create Hello World Function Solve ↗ ✓ Mark Daily Temperatures completed Daily Temperatures Solve ↗ ✓ Mark Find First and Last Position of Element in Sorted Array completed Find First and Last Position of Element in Sorted Array Solve ↗ ✓ Mark Find Median from Data Stream completed Find Median from Data Stream Solve ↗ ✓ Mark Find Peak Element completed Find Peak Element Solve ↗ ✓ Mark First Missing Positive completed First Missing Positive Solve ↗ ✓ Mark Gas Station completed Gas Station Solve ↗ ✓ Mark House Robber completed House Robber Solve ↗ ✓ Mark Identify the Largest Outlier in an Array completed Identify the Largest Outlier in an Array Solve ↗ ✓ Mark Insert Delete GetRandom O(1) completed Insert Delete GetRandom O(1) Solve ↗ ✓ Mark Jump Game II completed Jump Game II Solve ↗ ✓ Mark Kth Largest Element in an Array completed Kth Largest Element in an Array Solve ↗ ✓ Mark Largest Rectangle in Histogram completed Largest Rectangle in Histogram Solve ↗ ✓ Mark Length of the Longest Valid Substring completed Length of the Longest Valid Substring Solve ↗ ✓ Mark Letter Combinations of a Phone Number completed Letter Combinations of a Phone Number Solve ↗ ✓ Mark LFU Cache completed LFU Cache Solve ↗ ✓ Mark Lowest Common Ancestor of a Binary Tree completed Lowest Common Ancestor of a Binary Tree Solve ↗ ✓ Mark Majority Element completed Majority Element Solve ↗ ✓ Mark Meeting Rooms II completed Meeting Rooms II Solve ↗ ✓ Mark Merge Strings Alternately completed Merge Strings Alternately Solve ↗ ✓ Mark Merge Two Sorted Lists completed Merge Two Sorted Lists Solve ↗ ✓ Mark Min Stack completed Min Stack Solve ↗ ✓ Mark Minimum Adjacent Swaps to Make a Valid Array completed Minimum Adjacent Swaps to Make a Valid Array Solve ↗ ✓ Mark Minimum Window Substring completed Minimum Window Substring Solve ↗ ✓ Mark Missing Number completed Missing Number Solve ↗ ✓ Mark Move Zeroes completed Move Zeroes Solve ↗ ✓ Mark N-Queens completed N-Queens Solve ↗ ✓ Mark Next Permutation completed Next Permutation Solve ↗ ✓ Mark Pascal's Triangle completed Pascal's Triangle Solve ↗ ✓ Mark Plates Between Candles completed Plates Between Candles Solve ↗ ✓ Mark Pow(x, n) completed Pow(x, n) Solve ↗ ✓ Mark Recyclable and Low Fat Products completed Recyclable and Low Fat Products Solve ↗ ✓ Mark Regular Expression Matching completed Regular Expression Matching Solve ↗ ✓ Mark Remove Duplicates from Sorted Array completed Remove Duplicates from Sorted Array Solve ↗ ✓ Mark Reverse Integer completed Reverse Integer Solve ↗ ✓ Mark Reverse Linked List completed Reverse Linked List Solve ↗ ✓ Mark Reverse Nodes in k-Group completed Reverse Nodes in k-Group Solve ↗ ✓ Mark Roman to Integer completed Roman to Integer Solve ↗ ✓ Mark Rotate Array completed Rotate Array Solve ↗ ✓ Mark Rotate Image completed Rotate Image Solve ↗ ✓ Mark Search a 2D Matrix completed Search a 2D Matrix Solve ↗ ✓ Mark Serialize and Deserialize Binary Tree completed Serialize and Deserialize Binary Tree Solve ↗ ✓ Mark Single Number completed Single Number Solve ↗ ✓ Mark Sliding Window Maximum completed Sliding Window Maximum Solve ↗ ✓ Mark Sort Colors completed Sort Colors Solve ↗ ✓ Mark Spiral Matrix completed Spiral Matrix Solve ↗ ✓ Mark Subsets completed Subsets Solve ↗ ✓ Mark Task Scheduler completed Task Scheduler Solve ↗ ✓ Mark Unique Paths completed Unique Paths Solve ↗ ✓ Mark Valid Anagram completed Valid Anagram Solve ↗ ✓ Mark Valid Sudoku completed Valid Sudoku Solve ↗ ✓ Mark Word Break completed Word Break Solve ↗ ✓ Mark Word Search completed Word Search Solve ↗ ✓ Mark 3Sum Closest completed 3Sum Closest Solve ↗ ✓ Mark Add Binary completed Add Binary Solve ↗ ✓ Mark All Nodes Distance K in Binary Tree completed All Nodes Distance K in Binary Tree Solve ↗ ✓ Mark Article Views I completed Article Views I Solve ↗ ✓ Mark Average Time of Process per Machine completed Average Time of Process per Machine Solve ↗ ✓ Mark Balanced Binary Tree completed Balanced Binary Tree Solve ↗ ✓ Mark Basic Calculator completed Basic Calculator Solve ↗ ✓ Mark Basic Calculator II completed Basic Calculator II Solve ↗ ✓ Mark Binary Tree Level Order Traversal completed Binary Tree Level Order Traversal Solve ↗ ✓ Mark Candy completed Candy Solve ↗ ✓ Mark Capacity To Ship Packages Within D Days completed Capacity To Ship Packages Within D Days Solve ↗ ✓ Mark Check if Array Is Sorted and Rotated completed Check if Array Is Sorted and Rotated Solve ↗ ✓ Mark Combination Sum completed Combination Sum Solve ↗ ✓ Mark Construct Binary Tree from Preorder and Inorder Traversal completed Construct Binary Tree from Preorder and Inorder Traversal Solve ↗ ✓ Mark Contains Duplicate II completed Contains Duplicate II Solve ↗ ✓ Mark Count Primes completed Count Primes Solve ↗ ✓ Mark Decode String completed Decode String Solve ↗ ✓ Mark Decode Ways completed Decode Ways Solve ↗ ✓ Mark Diameter of Binary Tree completed Diameter of Binary Tree Solve ↗ ✓ Mark Divide Two Integers completed Divide Two Integers Solve ↗ ✓ Mark Edit Distance completed Edit Distance Solve ↗ ✓ Mark Evaluate Division completed Evaluate Division Solve ↗ ✓ Mark Evaluate Reverse Polish Notation completed Evaluate Reverse Polish Notation Solve ↗ ✓ Mark Fibonacci Number completed Fibonacci Number Solve ↗ ✓ Mark Find All Anagrams in a String completed Find All Anagrams in a String Solve ↗ ✓ Mark Find Minimum in Rotated Sorted Array completed Find Minimum in Rotated Sorted Array Solve ↗ ✓ Mark Find the Duplicate Number completed Find the Duplicate Number Solve ↗ ✓ Mark Find the Index of the First Occurrence in a String completed Find the Index of the First Occurrence in a String Solve ↗ ✓ Mark First Unique Character in a String completed First Unique Character in a String Solve ↗ ✓ Mark Fizz Buzz completed Fizz Buzz Solve ↗ ✓ Mark Flood Fill completed Flood Fill Solve ↗ ✓ Mark Fruit Into Baskets completed Fruit Into Baskets Solve ↗ ✓ Mark Happy Number completed Happy Number Solve ↗ ✓ Mark Integer to English Words completed Integer to English Words Solve ↗ ✓ Mark Integer to Roman completed Integer to Roman Solve ↗ ✓ Mark Intersection of Two Arrays completed Intersection of Two Arrays Solve ↗ ✓ Mark Intersection of Two Linked Lists completed Intersection of Two Linked Lists Solve ↗ ✓ Mark Isomorphic Strings completed Isomorphic Strings Solve ↗ ✓ Mark K Closest Points to Origin completed K Closest Points to Origin Solve ↗ ✓ Mark Kth Largest Element in a Stream completed Kth Largest Element in a Stream Solve ↗ ✓ Mark Kth Smallest Element in a BST completed Kth Smallest Element in a BST Solve ↗ ✓ Mark Largest Number completed Largest Number Solve ↗ ✓ Mark Length of Last Word completed Length of Last Word Solve ↗ ✓ Mark Linked List Cycle completed Linked List Cycle Solve ↗ ✓ Mark Longest Common Subsequence completed Longest Common Subsequence Solve ↗ ✓ Mark Longest Increasing Subsequence completed Longest Increasing Subsequence Solve ↗ ✓ Mark Longest Repeating Character Replacement completed Longest Repeating Character Replacement Solve ↗ ✓ Mark Longest Valid Parentheses completed Longest Valid Parentheses Solve ↗ ✓ Mark Lowest Common Ancestor of a Binary Search Tree completed Lowest Common Ancestor of a Binary Search Tree Solve ↗ ✓ Mark Lowest Common Ancestor of a Binary Tree III completed Lowest Common Ancestor of a Binary Tree III Solve ↗ ✓ Mark Make Array Zero by Subtracting Equal Amounts completed Make Array Zero by Subtracting Equal Amounts Solve ↗ ✓ Mark Managers with at Least 5 Direct Reports completed Managers with at Least 5 Direct Reports Solve ↗ ✓ Mark Max Consecutive Ones completed Max Consecutive Ones Solve ↗ ✓ Mark Max Consecutive Ones III completed Max Consecutive Ones III Solve ↗ ✓ Mark Maximum Depth of Binary Tree completed Maximum Depth of Binary Tree Solve ↗ ✓ Mark Maximum Frequency After Subarray Operation completed Maximum Frequency After Subarray Operation Solve ↗ ✓ Mark Maximum Product Subarray completed Maximum Product Subarray Solve ↗ ✓ Mark Maximum Profit in Job Scheduling completed Maximum Profit in Job Scheduling Solve ↗ ✓ Mark Maximum Width of Binary Tree completed Maximum Width of Binary Tree Solve ↗ ✓ Mark Middle of the Linked List completed Middle of the Linked List Solve ↗ ✓ Mark Minimum Health to Beat Game completed Minimum Health to Beat Game Solve ↗ ✓ Mark Minimum Path Sum completed Minimum Path Sum Solve ↗ ✓ Mark Next Greater Element I completed Next Greater Element I Solve ↗ ✓ Mark Next Greater Element II completed Next Greater Element II Solve ↗ ✓ Mark Number of Provinces completed Number of Provinces Solve ↗ ✓ Mark Odd Even Linked List completed Odd Even Linked List Solve ↗ ✓ Mark Palindrome Linked List completed Palindrome Linked List Solve ↗ ✓ Mark Palindrome Partitioning completed Palindrome Partitioning Solve ↗ ✓ Mark Partition Equal Subset Sum completed Partition Equal Subset Sum Solve ↗ ✓ Mark Peak Index in a Mountain Array completed Peak Index in a Mountain Array Solve ↗ ✓ Mark Permutation in String completed Permutation in String Solve ↗ ✓ Mark Permutations completed Permutations Solve ↗ ✓ Mark Plus One completed Plus One Solve ↗ ✓ Mark Populating Next Right Pointers in Each Node completed Populating Next Right Pointers in Each Node Solve ↗ ✓ Mark Random Pick with Weight completed Random Pick with Weight Solve ↗ ✓ Mark Remove Duplicates from Sorted Array II completed Remove Duplicates from Sorted Array II Solve ↗ ✓ Mark Remove Element completed Remove Element Solve ↗ ✓ Mark Remove Nth Node From End of List completed Remove Nth Node From End of List Solve ↗ ✓ Mark Reorder List completed Reorder List Solve ↗ ✓ Mark Reverse Linked List II completed Reverse Linked List II Solve ↗ ✓ Mark Reverse String completed Reverse String Solve ↗ ✓ Mark Reverse Words in a String completed Reverse Words in a String Solve ↗ ✓ Mark Rotate List completed Rotate List Solve ↗ ✓ Mark Same Tree completed Same Tree Solve ↗ ✓ Mark Search a 2D Matrix II completed Search a 2D Matrix II Solve ↗ ✓ Mark Search Insert Position completed Search Insert Position Solve ↗ ✓ Mark Search Suggestions System completed Search Suggestions System Solve ↗ ✓ Mark Set Matrix Zeroes completed Set Matrix Zeroes Solve ↗ ✓ Mark Simplify Path completed Simplify Path Solve ↗ ✓ Mark Single Element in a Sorted Array completed Single Element in a Sorted Array Solve ↗ ✓ Mark Smallest Range Covering Elements from K Lists completed Smallest Range Covering Elements from K Lists Solve ↗ ✓ Mark Sort an Array completed Sort an Array Solve ↗ ✓ Mark Split Array Largest Sum completed Split Array Largest Sum Solve ↗ ✓ Mark Sqrt(x) completed Sqrt(x) Solve ↗ ✓ Mark String Compression completed String Compression Solve ↗ ✓ Mark String to Integer (atoi) completed String to Integer (atoi) Solve ↗ ✓ Mark Subarrays with K Different Integers completed Subarrays with K Different Integers Solve ↗ ✓ Mark Subsets II completed Subsets II Solve ↗ ✓ Mark Sudoku Solver completed Sudoku Solver Solve ↗ ✓ Mark Sum of Subarray Minimums completed Sum of Subarray Minimums Solve ↗ ✓ Mark Swap Nodes in Pairs completed Swap Nodes in Pairs Solve ↗ ✓ Mark Symmetric Tree completed Symmetric Tree Solve ↗ ✓ Mark The kth Factor of n completed The kth Factor of n Solve ↗ ✓ Mark Time Based Key-Value Store completed Time Based Key-Value Store Solve ↗ ✓ Mark Two Sum II - Input Array Is Sorted completed Two Sum II - Input Array Is Sorted Solve ↗ ✓ Mark Valid Palindrome completed Valid Palindrome Solve ↗ ✓ Mark Validate Binary Search Tree completed Validate Binary Search Tree Solve ↗ ✓ Mark Vertical Order Traversal of a Binary Tree completed Vertical Order Traversal of a Binary Tree Solve ↗ ✓ Mark Word Break II completed Word Break II Solve ↗ ✓ Mark Word Ladder II completed Word Ladder II Solve ↗ ✓ Mark Word Search II completed Word Search II Solve ↗ ✓ Mark Zigzag Conversion completed Zigzag Conversion Solve ↗ ✓ Mark 01 Matrix completed 01 Matrix Solve ↗ ✓ Mark Accounts Merge completed Accounts Merge Solve ↗ ✓ Mark Add Two Integers completed Add Two Integers Solve ↗ ✓ Mark Alien Dictionary completed Alien Dictionary Solve ↗ ✓ Mark Amount of Time for Binary Tree to Be Infected completed Amount of Time for Binary Tree to Be Infected Solve ↗ ✓ Mark Apply Discount to Prices completed Apply Discount to Prices Solve ↗ ✓ Mark Assign Cookies completed Assign Cookies Solve ↗ ✓ Mark Average Selling Price completed Average Selling Price Solve ↗ ✓ Mark Balance a Binary Search Tree completed Balance a Binary Search Tree Solve ↗ ✓ Mark Baseball Game completed Baseball Game Solve ↗ ✓ Mark Best Poker Hand completed Best Poker Hand Solve ↗ ✓ Mark Best Time to Buy and Sell Stock III completed Best Time to Buy and Sell Stock III Solve ↗ ✓ Mark Big Countries completed Big Countries Solve ↗ ✓ Mark Binary Search completed Binary Search Solve ↗ ✓ Mark Binary Search Tree Iterator completed Binary Search Tree Iterator Solve ↗ ✓ Mark Binary Search Tree to Greater Sum Tree completed Binary Search Tree to Greater Sum Tree Solve ↗ ✓ Mark Binary Subarrays With Sum completed Binary Subarrays With Sum Solve ↗ ✓ Mark Binary Tree Cameras completed Binary Tree Cameras Solve ↗ ✓ Mark Binary Tree Inorder Traversal completed Binary Tree Inorder Traversal Solve ↗ ✓ Mark Binary Tree Vertical Order Traversal completed Binary Tree Vertical Order Traversal Solve ↗ ✓ Mark Boats to Save People completed Boats to Save People Solve ↗ ✓ Mark Boundary of Binary Tree completed Boundary of Binary Tree Solve ↗ ✓ Mark Burst Balloons completed Burst Balloons Solve ↗ ✓ Mark Bus Routes completed Bus Routes Solve ↗ ✓ Mark Can Place Flowers completed Can Place Flowers Solve ↗ ✓ Mark Cheapest Flights Within K Stops completed Cheapest Flights Within K Stops Solve ↗ ✓ Mark Clone Binary Tree With Random Pointer completed Clone Binary Tree With Random Pointer Solve ↗ ✓ Mark Clone Graph completed Clone Graph Solve ↗ ✓ Mark Coin Change II completed Coin Change II Solve ↗ ✓ Mark Combination Sum II completed Combination Sum II Solve ↗ ✓ Mark Combinations completed Combinations Solve ↗ ✓ Mark Combine Two Tables completed Combine Two Tables Solve ↗ ✓ Mark Compare Version Numbers completed Compare Version Numbers Solve ↗ ✓ Mark Confirmation Rate completed Confirmation Rate Solve ↗ ✓ Mark Consecutive Numbers completed Consecutive Numbers Solve ↗ ✓ Mark Construct Binary Search Tree from Preorder Traversal completed Construct Binary Search Tree from Preorder Traversal Solve ↗ ✓ Mark Contiguous Array completed Contiguous Array Solve ↗ ✓ Mark Continuous Subarray Sum completed Continuous Subarray Sum Solve ↗ ✓ Mark Convert Sorted Array to Binary Search Tree completed Convert Sorted Array to Binary Search Tree Solve ↗ ✓ Mark Count and Say completed Count and Say Solve ↗ ✓ Mark Count Good Numbers completed Count Good Numbers Solve ↗ ✓ Mark Count Negative Numbers in a Sorted Matrix completed Count Negative Numbers in a Sorted Matrix Solve ↗ ✓ Mark Count Number of Rectangles Containing Each Point completed Count Number of Rectangles Containing Each Point Solve ↗ ✓ Mark Create a DataFrame from List completed Create a DataFrame from List Solve ↗ ✓ Mark Critical Connections in a Network completed Critical Connections in a Network Solve ↗ ✓ Mark Custom Sort String completed Custom Sort String Solve ↗ ✓ Mark Customer Who Visited but Did Not Make Any Transactions completed Customer Who Visited but Did Not Make Any Transactions Solve ↗ ✓ Mark Customers Who Bought All Products completed Customers Who Bought All Products Solve ↗ ✓ Mark Delete Node in a BST completed Delete Node in a BST Solve ↗ ✓ Mark Delete Node in a Linked List completed Delete Node in a Linked List Solve ↗ ✓ Mark Design Add and Search Words Data Structure completed Design Add and Search Words Data Structure Solve ↗ ✓ Mark Design HashMap completed Design HashMap Solve ↗ ✓ Mark Design In-Memory File System completed Design In-Memory File System Solve ↗ ✓ Mark Design Parking System completed Design Parking System Solve ↗ ✓ Mark Design Tic-Tac-Toe completed Design Tic-Tac-Toe Solve ↗ ✓ Mark Design Twitter completed Design Twitter Solve ↗ ✓ Mark Diagonal Traverse completed Diagonal Traverse Solve ↗ ✓ Mark Different Ways to Add Parentheses completed Different Ways to Add Parentheses Solve ↗ ✓ Mark Distinct Subsequences completed Distinct Subsequences Solve ↗ ✓ Mark Distribute Candies Among Children II completed Distribute Candies Among Children II Solve ↗ ✓ Mark Domino and Tromino Tiling completed Domino and Tromino Tiling Solve ↗ ✓ Mark Dungeon Game completed Dungeon Game Solve ↗ ✓ Mark Employee Bonus completed Employee Bonus Solve ↗ ✓ Mark Employees Earning More Than Their Managers completed Employees Earning More Than Their Managers Solve ↗ ✓ Mark Exclusive Time of Functions completed Exclusive Time of Functions Solve ↗ ✓ Mark Find All Duplicates in an Array completed Find All Duplicates in an Array Solve ↗ ✓ Mark Find All Numbers Disappeared in an Array completed Find All Numbers Disappeared in an Array Solve ↗ ✓ Mark Find Common Characters completed Find Common Characters Solve ↗ ✓ Mark Find Customer Referee completed Find Customer Referee Solve ↗ ✓ Mark Find Eventual Safe States completed Find Eventual Safe States Solve ↗ ✓ Mark Find K Closest Elements completed Find K Closest Elements Solve ↗ ✓ Mark Find K Pairs with Smallest Sums completed Find K Pairs with Smallest Sums Solve ↗ ✓ Mark Find Longest Self-Contained Substring completed Find Longest Self-Contained Substring Solve ↗ ✓ Mark Find Minimum Time to Finish All Jobs completed Find Minimum Time to Finish All Jobs Solve ↗ ✓ Mark Find Missing and Repeated Values completed Find Missing and Repeated Values Solve ↗ ✓ Mark Find Pivot Index completed Find Pivot Index Solve ↗ ✓ Mark Find the Number of Possible Ways for an Event completed Find the Number of Possible Ways for an Event Solve ↗ ✓ Mark Find the Smallest Divisor Given a Threshold completed Find the Smallest Divisor Given a Threshold Solve ↗ ✓ Mark Find the Town Judge completed Find the Town Judge Solve ↗ ✓ Mark Find Triangular Sum of an Array completed Find Triangular Sum of an Array Solve ↗ ✓ Mark First Bad Version completed First Bad Version Solve ↗ ✓ Mark First Unique Number completed First Unique Number Solve ↗ ✓ Mark Flatten a Multilevel Doubly Linked List completed Flatten a Multilevel Doubly Linked List Solve ↗ ✓ Mark Flatten Binary Tree to Linked List completed Flatten Binary Tree to Linked List Solve ↗ ✓ Mark Frequency of the Most Frequent Element completed Frequency of the Most Frequent Element Solve ↗ ✓ Mark Furthest Building You Can Reach completed Furthest Building You Can Reach Solve ↗ ✓ Mark Greatest Common Divisor of Strings completed Greatest Common Divisor of Strings Solve ↗ ✓ Mark H-Index completed H-Index Solve ↗ ✓ Mark Heaters completed Heaters Solve ↗ ✓ Mark House Robber II completed House Robber II Solve ↗ ✓ Mark House Robber III completed House Robber III Solve ↗ ✓ Mark Immediate Food Delivery II completed Immediate Food Delivery II Solve ↗ ✓ Mark Implement Queue using Stacks completed Implement Queue using Stacks Solve ↗ ✓ Mark Implement Stack using Queues completed Implement Stack using Queues Solve ↗ ✓ Mark Implement Trie (Prefix Tree) completed Implement Trie (Prefix Tree) Solve ↗ ✓ Mark Increasing Triplet Subsequence completed Increasing Triplet Subsequence Solve ↗ ✓ Mark Insert Interval completed Insert Interval Solve ↗ ✓ Mark Invert Binary Tree completed Invert Binary Tree Solve ↗ ✓ Mark Is Graph Bipartite? completed Is Graph Bipartite? Solve ↗ ✓ Mark Is Subsequence completed Is Subsequence Solve ↗ ✓ Mark Jewels and Stones completed Jewels and Stones Solve ↗ ✓ Mark K-diff Pairs in an Array completed K-diff Pairs in an Array Solve ↗ ✓ Mark Kids With the Greatest Number of Candies completed Kids With the Greatest Number of Candies Solve ↗ ✓ Mark Kth Missing Positive Number completed Kth Missing Positive Number Solve ↗ ✓ Mark Kth Smallest Element in a Sorted Matrix completed Kth Smallest Element in a Sorted Matrix Solve ↗ ✓ Mark Linked List Cycle II completed Linked List Cycle II Solve ↗ ✓ Mark Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit completed Longest Continuous Subarray With Absolute Diff Less Than or Equal to Limit Solve ↗ ✓ Mark Longest Duplicate Substring completed Longest Duplicate Substring Solve ↗ ✓ Mark Longest Palindrome completed Longest Palindrome Solve ↗ ✓ Mark Longest Palindromic Subsequence completed Longest Palindromic Subsequence Solve ↗ ✓ Mark Majority Element II completed Majority Element II Solve ↗ ✓ Mark Make String a Subsequence Using Cyclic Increments completed Make String a Subsequence Using Cyclic Increments Solve ↗ ✓ Mark Make Sum Divisible by P completed Make Sum Divisible by P Solve ↗ ✓ Mark Making A Large Island completed Making A Large Island Solve ↗ ✓ Mark Max Area of Island completed Max Area of Island Solve ↗ ✓ Mark Max Sum of a Pair With Equal Sum of Digits completed Max Sum of a Pair With Equal Sum of Digits Solve ↗ ✓ Mark Maximal Rectangle completed Maximal Rectangle Solve ↗ ✓ Mark Maximal Square completed Maximal Square Solve ↗ ✓ Mark Maximum Average Pass Ratio completed Maximum Average Pass Ratio Solve ↗ ✓ Mark Maximum Average Subarray I completed Maximum Average Subarray I Solve ↗ ✓ Mark Maximum K to Sort a Permutation completed Maximum K to Sort a Permutation Solve ↗ ✓ Mark Maximum Number of Books You Can Take completed Maximum Number of Books You Can Take Solve ↗ ✓ Mark Maximum Number of Events That Can Be Attended completed Maximum Number of Events That Can Be Attended Solve ↗ ✓ Mark Maximum Number of Groups With Increasing Length completed Maximum Number of Groups With Increasing Length Solve ↗ ✓ Mark Maximum Number of Vowels in a Substring of Given Length completed Maximum Number of Vowels in a Substring of Given Length Solve ↗ ✓ Mark Maximum Points You Can Obtain from Cards completed Maximum Points You Can Obtain from Cards Solve ↗ ✓ Mark Maximum Sum BST in Binary Tree completed Maximum Sum BST in Binary Tree Solve ↗ ✓ Mark Maximum Sum of Distinct Subarrays With Length K completed Maximum Sum of Distinct Subarrays With Length K Solve ↗ ✓ Mark Maximum Units on a Truck completed Maximum Units on a Truck Solve ↗ ✓ Mark Maximum Width Ramp completed Maximum Width Ramp Solve ↗ ✓ Mark Merge Two Binary Trees completed Merge Two Binary Trees Solve ↗ ✓ Mark Min Cost Climbing Stairs completed Min Cost Climbing Stairs Solve ↗ ✓ Mark Minimum Add to Make Parentheses Valid completed Minimum Add to Make Parentheses Valid Solve ↗ ✓ Mark Minimum Average Difference completed Minimum Average Difference Solve ↗ ✓ Mark Minimum Difference in Sums After Removal of Elements completed Minimum Difference in Sums After Removal of Elements Solve ↗ ✓ Mark Minimum Increment to Make Array Unique completed Minimum Increment to Make Array Unique Solve ↗ ✓ Mark Minimum Number of Arrows to Burst Balloons completed Minimum Number of Arrows to Burst Balloons Solve ↗ ✓ Mark Minimum Number of Days to Make m Bouquets completed Minimum Number of Days to Make m Bouquets Solve ↗ ✓ Mark Minimum Number of Keypresses completed Minimum Number of Keypresses Solve ↗ ✓ Mark Minimum Number of Operations to Make Array Empty completed Minimum Number of Operations to Make Array Empty Solve ↗ ✓ Mark Minimum Number of Primes to Sum to Target completed Minimum Number of Primes to Sum to Target Solve ↗ ✓ Mark Minimum Number of Pushes to Type Word II completed Minimum Number of Pushes to Type Word II Solve ↗ ✓ Mark Minimum Remove to Make Valid Parentheses completed Minimum Remove to Make Valid Parentheses Solve ↗ ✓ Mark Minimum Size Subarray Sum completed Minimum Size Subarray Sum Solve ↗ ✓ Mark Minimum Swaps to Group All 1's Together II completed Minimum Swaps to Group All 1's Together II Solve ↗ ✓ Mark Minimum Time to Complete All Deliveries completed Minimum Time to Complete All Deliveries Solve ↗ ✓ Mark Monthly Transactions I completed Monthly Transactions I Solve ↗ ✓ Mark Most Expensive Item That Can Not Be Bought completed Most Expensive Item That Can Not Be Bought Solve ↗ ✓ Mark Multiply Strings completed Multiply Strings Solve ↗ ✓ Mark Next Greater Element III completed Next Greater Element III Solve ↗ ✓ Mark Non-overlapping Intervals completed Non-overlapping Intervals Solve ↗ ✓ Mark Number of 1 Bits completed Number of 1 Bits Solve ↗ ✓ Mark Number of Connected Components in an Undirected Graph completed Number of Connected Components in an Undirected Graph Solve ↗ ✓ Mark Number of Distinct Islands completed Number of Distinct Islands Solve ↗ ✓ Mark Number of Equivalent Domino Pairs completed Number of Equivalent Domino Pairs Solve ↗ ✓ Mark Number of Ways to Select Buildings completed Number of Ways to Select Buildings Solve ↗ ✓ Mark Online Stock Span completed Online Stock Span Solve ↗ ✓ Mark Open the Lock completed Open the Lock Solve ↗ ✓ Mark Optimal Partition of String completed Optimal Partition of String Solve ↗ ✓ Mark Pacific Atlantic Water Flow completed Pacific Atlantic Water Flow Solve ↗ ✓ Mark Palindromic Substrings completed Palindromic Substrings Solve ↗ ✓ Mark Partition Labels completed Partition Labels Solve ↗ ✓ Mark Partition List completed Partition List Solve ↗ ✓ Mark Pascal's Triangle II completed Pascal's Triangle II Solve ↗ ✓ Mark Path Crossing completed Path Crossing Solve ↗ ✓ Mark Path Sum completed Path Sum Solve ↗ ✓ Mark Path Sum III completed Path Sum III Solve ↗ ✓ Mark Perfect Squares completed Perfect Squares Solve ↗ ✓ Mark Permutation Sequence completed Permutation Sequence Solve ↗ ✓ Mark Permutations II completed Permutations II Solve ↗ ✓ Mark Power of Two completed Power of Two Solve ↗ ✓ Mark Process String with Special Operations I completed Process String with Special Operations I Solve ↗ ✓ Mark Product Sales Analysis I completed Product Sales Analysis I Solve ↗ ✓ Mark Product Sales Analysis III completed Product Sales Analysis III Solve ↗ ✓ Mark Put Marbles in Bags completed Put Marbles in Bags Solve ↗ ✓ Mark Range Sum Query - Immutable completed Range Sum Query - Immutable Solve ↗ ✓ Mark Ransom Note completed Ransom Note Solve ↗ ✓ Mark Rearrange Array Elements by Sign completed Rearrange Array Elements by Sign Solve ↗ ✓ Mark Reconstruct Itinerary completed Reconstruct Itinerary Solve ↗ ✓ Mark Recover Binary Search Tree completed Recover Binary Search Tree Solve ↗ ✓ Mark Remove All Adjacent Duplicates In String completed Remove All Adjacent Duplicates In String Solve ↗ ✓ Mark Remove All Adjacent Duplicates in String II completed Remove All Adjacent Duplicates in String II Solve ↗ ✓ Mark Remove Duplicate Letters completed Remove Duplicate Letters Solve ↗ ✓ Mark Remove Duplicates from Sorted List completed Remove Duplicates from Sorted List Solve ↗ ✓ Mark Remove K Digits completed Remove K Digits Solve ↗ ✓ Mark Remove Nodes From Linked List completed Remove Nodes From Linked List Solve ↗ ✓ Mark Removing Stars From a String completed Removing Stars From a String Solve ↗ ✓ Mark Reorder Data in Log Files completed Reorder Data in Log Files Solve ↗ ✓ Mark Repeated Substring Pattern completed Repeated Substring Pattern Solve ↗ ✓ Mark Replace Elements with Greatest Element on Right Side completed Replace Elements with Greatest Element on Right Side Solve ↗ ✓ Mark Replace Employee ID With The Unique Identifier completed Replace Employee ID With The Unique Identifier Solve ↗ ✓ Mark Reveal Cards In Increasing Order completed Reveal Cards In Increasing Order Solve ↗ ✓ Mark Reverse Pairs completed Reverse Pairs Solve ↗ ✓ Mark Reverse Vowels of a String completed Reverse Vowels of a String Solve ↗ ✓ Mark Rising Temperature completed Rising Temperature Solve ↗ ✓ Mark Rotate String completed Rotate String Solve ↗ ✓ Mark Russian Doll Envelopes completed Russian Doll Envelopes Solve ↗ ✓ Mark Search in Rotated Sorted Array II completed Search in Rotated Sorted Array II Solve ↗ ✓ Mark Second Highest Salary completed Second Highest Salary Solve ↗ ✓ Mark Set Mismatch completed Set Mismatch Solve ↗ ✓ Mark Shortest Common Supersequence completed Shortest Common Supersequence Solve ↗ ✓ Mark Shortest Path in Binary Matrix completed Shortest Path in Binary Matrix Solve ↗ ✓ Mark Single Number II completed Single Number II Solve ↗ ✓ Mark Snakes and Ladders completed Snakes and Ladders Solve ↗ ✓ Mark Sort Characters By Frequency completed Sort Characters By Frequency Solve ↗ ✓ Mark Sort List completed Sort List Solve ↗ ✓ Mark Split Linked List in Parts completed Split Linked List in Parts Solve ↗ ✓ Mark Squares of a Sorted Array completed Squares of a Sorted Array Solve ↗ ✓ Mark Subarray Product Less Than K completed Subarray Product Less Than K Solve ↗ ✓ Mark Subarray Sums Divisible by K completed Subarray Sums Divisible by K Solve ↗ ✓ Mark Substring with Concatenation of All Words completed Substring with Concatenation of All Words Solve ↗ ✓ Mark Sum of All Subset XOR Totals completed Sum of All Subset XOR Totals Solve ↗ ✓ Mark Sum of Square Numbers completed Sum of Square Numbers Solve ↗ ✓ Mark Sum of Subarray Ranges completed Sum of Subarray Ranges Solve ↗ ✓ Mark Sum of Total Strength of Wizards completed Sum of Total Strength of Wizards Solve ↗ ✓ Mark Sum of Two Integers completed Sum of Two Integers Solve ↗ ✓ Mark Surrounded Regions completed Surrounded Regions Solve ↗ ✓ Mark Swapping Nodes in a Linked List completed Swapping Nodes in a Linked List Solve ↗ ✓ Mark Target Sum completed Target Sum Solve ↗ ✓ Mark Text Justification completed Text Justification Solve ↗ ✓ Mark The Number of the Smallest Unoccupied Chair completed The Number of the Smallest Unoccupied Chair Solve ↗ ✓ Mark To Be Or Not To Be completed To Be Or Not To Be Solve ↗ ✓ Mark Top K Frequent Words completed Top K Frequent Words Solve ↗ ✓ Mark Total Appeal of A String completed Total Appeal of A String Solve ↗ ✓ Mark Trapping Rain Water II completed Trapping Rain Water II Solve ↗ ✓ Mark Triangle completed Triangle Solve ↗ ✓ Mark Two Sum IV - Input is a BST completed Two Sum IV - Input is a BST Solve ↗ ✓ Mark Unique Binary Search Trees completed Unique Binary Search Trees Solve ↗ ✓ Mark Unique Number of Occurrences completed Unique Number of Occurrences Solve ↗ ✓ Mark Unique Paths II completed Unique Paths II Solve ↗ ✓ Mark Using a Robot to Print the Lexicographically Smallest String completed Using a Robot to Print the Lexicographically Smallest String Solve ↗ ✓ Mark Valid Palindrome II completed Valid Palindrome II Solve ↗ ✓ Mark Valid Parenthesis String completed Valid Parenthesis String Solve ↗ ✓ Mark Wildcard Matching completed Wildcard Matching Solve ↗ ✓ Mark 132 Pattern completed 132 Pattern Solve ↗ ✓ Mark 2 Keys Keyboard completed 2 Keys Keyboard Solve ↗ ✓ Mark Actors and Directors Who Cooperated At Least Three Times completed Actors and Directors Who Cooperated At Least Three Times Solve ↗ ✓ Mark Ad-Free Sessions completed Ad-Free Sessions Solve ↗ ✓ Mark Add Digits completed Add Digits Solve ↗ ✓ Mark Add Strings completed Add Strings Solve ↗ ✓ Mark Add Two Numbers II completed Add Two Numbers II Solve ↗ ✓ Mark Add Two Polynomials Represented as Linked Lists completed Add Two Polynomials Represented as Linked Lists Solve ↗ ✓ Mark Adding Spaces to a String completed Adding Spaces to a String Solve ↗ ✓ Mark All Elements in Two Binary Search Trees completed All Elements in Two Binary Search Trees Solve ↗ ✓ Mark All O`one Data Structure completed All O`one Data Structure Solve ↗ ✓ Mark All Paths From Source to Target completed All Paths From Source to Target Solve ↗ ✓ Mark All Valid Triplets That Can Represent a Country completed All Valid Triplets That Can Represent a Country Solve ↗ ✓ Mark Allocate Mailboxes completed Allocate Mailboxes Solve ↗ ✓ Mark Angle Between Hands of a Clock completed Angle Between Hands of a Clock Solve ↗ ✓ Mark Append Characters to String to Make Subsequence completed Append Characters to String to Make Subsequence Solve ↗ ✓ Mark Append K Integers With Minimal Sum completed Append K Integers With Minimal Sum Solve ↗ ✓ Mark Armstrong Number completed Armstrong Number Solve ↗ ✓ Mark Arranging Coins completed Arranging Coins Solve ↗ ✓ Mark Array Partition completed Array Partition Solve ↗ ✓ Mark Array Prototype Last completed Array Prototype Last Solve ↗ ✓ Mark Avoid Flood in The City completed Avoid Flood in The City Solve ↗ ✓ Mark Backspace String Compare completed Backspace String Compare Solve ↗ ✓ Mark Basic Calculator III completed Basic Calculator III Solve ↗ ✓ Mark Battleships in a Board completed Battleships in a Board Solve ↗ ✓ Mark Best Time to Buy and Sell Stock IV completed Best Time to Buy and Sell Stock IV Solve ↗ ✓ Mark Best Time to Buy and Sell Stock with Transaction Fee completed Best Time to Buy and Sell Stock with Transaction Fee Solve ↗ ✓ Mark Binary Tree Paths completed Binary Tree Paths Solve ↗ ✓ Mark Binary Tree Postorder Traversal completed Binary Tree Postorder Traversal Solve ↗ ✓ Mark Bitwise AND of Numbers Range completed Bitwise AND of Numbers Range Solve ↗ ✓ Mark Build Array from Permutation completed Build Array from Permutation Solve ↗ ✓ Mark Build Binary Expression Tree From Infix Expression completed Build Binary Expression Tree From Infix Expression Solve ↗ ✓ Mark Buildings With an Ocean View completed Buildings With an Ocean View Solve ↗ ✓ Mark Bulb Switcher completed Bulb Switcher Solve ↗ ✓ Mark Bulls and Cows completed Bulls and Cows Solve ↗ ✓ Mark Can I Win completed Can I Win Solve ↗ ✓ Mark Can Make Arithmetic Progression From Sequence completed Can Make Arithmetic Progression From Sequence Solve ↗ ✓ Mark Car Fleet completed Car Fleet Solve ↗ ✓ Mark Car Pooling completed Car Pooling Solve ↗ ✓ Mark Check for Contradictions in Equations completed Check for Contradictions in Equations Solve ↗ ✓ Mark Check if a Parentheses String Can Be Valid completed Check if a Parentheses String Can Be Valid Solve ↗ ✓ Mark Check If Array Pairs Are Divisible by k completed Check If Array Pairs Are Divisible by k Solve ↗ ✓ Mark Check If Digits Are Equal in String After Operations I completed Check If Digits Are Equal in String After Operations I Solve ↗ ✓ Mark Check if Move is Legal completed Check if Move is Legal Solve ↗ ✓ Mark Check If N and Its Double Exist completed Check If N and Its Double Exist Solve ↗ ✓ Mark Clone N-ary Tree completed Clone N-ary Tree Solve ↗ ✓ Mark Closest Divisors completed Closest Divisors Solve ↗ ✓ Mark Closest Leaf in a Binary Tree completed Closest Leaf in a Binary Tree Solve ↗ ✓ Mark Closest Room completed Closest Room Solve ↗ ✓ Mark Combination Sum III completed Combination Sum III Solve ↗ ✓ Mark Complex Number Multiplication completed Complex Number Multiplication Solve ↗ ✓ Mark Concatenation of Array completed Concatenation of Array Solve ↗ ✓ Mark Concatenation of Consecutive Binary Numbers completed Concatenation of Consecutive Binary Numbers Solve ↗ ✓ Mark Connecting Cities With Minimum Cost completed Connecting Cities With Minimum Cost Solve ↗ ✓ Mark Construct Binary Tree from Inorder and Postorder Traversal completed Construct Binary Tree from Inorder and Postorder Traversal Solve ↗ ✓ Mark Construct Binary Tree from String completed Construct Binary Tree from String Solve ↗ ✓ Mark Construct Smallest Number From DI String completed Construct Smallest Number From DI String Solve ↗ ✓ Mark Construct String from Binary Tree completed Construct String from Binary Tree Solve ↗ ✓ Mark Convert BST to Greater Tree completed Convert BST to Greater Tree Solve ↗ ✓ Mark Convert Sorted List to Binary Search Tree completed Convert Sorted List to Binary Search Tree Solve ↗ ✓ Mark Count Beautiful Substrings I completed Count Beautiful Substrings I Solve ↗ ✓ Mark Count Beautiful Substrings II completed Count Beautiful Substrings II Solve ↗ ✓ Mark Count Binary Substrings completed Count Binary Substrings Solve ↗ ✓ Mark Count Bowl Subarrays completed Count Bowl Subarrays Solve ↗ ✓ Mark Count Elements With Maximum Frequency completed Count Elements With Maximum Frequency Solve ↗ ✓ Mark Count Number of Bad Pairs completed Count Number of Bad Pairs Solve ↗ ✓ Mark Count Number of Nice Subarrays completed Count Number of Nice Subarrays Solve ↗ ✓ Mark Count Number of Pairs With Absolute Difference K completed Count Number of Pairs With Absolute Difference K Solve ↗ ✓ Mark Count Number of Special Subsequences completed Count Number of Special Subsequences Solve ↗ ✓ Mark Count Number of Teams completed Count Number of Teams Solve ↗ ✓ Mark Count Number of Texts completed Count Number of Texts Solve ↗ ✓ Mark Count Numbers With Unique Digits II completed Count Numbers With Unique Digits II Solve ↗ ✓ Mark Count Pairs Of Nodes completed Count Pairs Of Nodes Solve ↗ ✓ Mark Count Servers that Communicate completed Count Servers that Communicate Solve ↗ ✓ Mark Count Square Submatrices with All Ones completed Count Square Submatrices with All Ones Solve ↗ ✓ Mark Count Stepping Numbers in Range completed Count Stepping Numbers in Range Solve ↗ ✓ Mark Count Subarrays of Length Three With a Condition completed Count Subarrays of Length Three With a Condition Solve ↗ ✓ Mark Count the Hidden Sequences completed Count the Hidden Sequences Solve ↗ ✓ Mark Count the Number of Fair Pairs completed Count the Number of Fair Pairs Solve ↗ ✓ Mark Count the Number of K-Big Indices completed Count the Number of K-Big Indices Solve ↗ ✓ Mark Count the Number of K-Free Subsets completed Count the Number of K-Free Subsets Solve ↗ ✓ Mark Count the Number of Special Characters I completed Count the Number of Special Characters I Solve ↗ ✓ Mark Count the Number of Special Characters II completed Count the Number of Special Characters II Solve ↗ ✓ Mark Count the Number of Substrings With Dominant Ones completed Count the Number of Substrings With Dominant Ones Solve ↗ ✓ Mark Count Triplets with Even XOR Set Bits I completed Count Triplets with Even XOR Set Bits I Solve ↗ ✓ Mark Count Triplets with Even XOR Set Bits II completed Count Triplets with Even XOR Set Bits II Solve ↗ ✓ Mark Count Unreachable Pairs of Nodes in an Undirected Graph completed Count Unreachable Pairs of Nodes in an Undirected Graph Solve ↗ ✓ Mark Count Vowel Strings in Ranges completed Count Vowel Strings in Ranges Solve ↗ ✓ Mark Count Ways to Make Array With Product completed Count Ways to Make Array With Product Solve ↗ ✓ Mark Count Zero Request Servers completed Count Zero Request Servers Solve ↗ ✓ Mark Counter completed Counter Solve ↗ ✓ Mark Counter II completed Counter II Solve ↗ ✓ Mark Counting Bits completed Counting Bits Solve ↗ ✓ Mark Course Schedule III completed Course Schedule III Solve ↗ ✓ Mark Course Schedule IV completed Course Schedule IV Solve ↗ ✓ Mark Cousins in Binary Tree completed Cousins in Binary Tree Solve ↗ ✓ Mark Cousins in Binary Tree II completed Cousins in Binary Tree II Solve ↗ ✓ Mark Customer Order Frequency completed Customer Order Frequency Solve ↗ ✓ Mark Customers Who Never Order completed Customers Who Never Order Solve ↗ ✓ Mark Customers With Strictly Increasing Purchases completed Customers With Strictly Increasing Purchases Solve ↗ ✓ Mark Cut Off Trees for Golf Event completed Cut Off Trees for Golf Event Solve ↗ ✓ Mark Decode the Slanted Ciphertext completed Decode the Slanted Ciphertext Solve ↗ ✓ Mark Decode XORed Permutation completed Decode XORed Permutation Solve ↗ ✓ Mark Defuse the Bomb completed Defuse the Bomb Solve ↗ ✓ Mark Delete and Earn completed Delete and Earn Solve ↗ ✓ Mark Delete Duplicate Emails completed Delete Duplicate Emails Solve ↗ ✓ Mark Delete Leaves With a Given Value completed Delete Leaves With a Given Value Solve ↗ ✓ Mark Delete Nodes From Linked List Present in Array completed Delete Nodes From Linked List Present in Array Solve ↗ ✓ Mark Department Highest Salary completed Department Highest Salary Solve ↗ ✓ Mark Department Top Three Salaries completed Department Top Three Salaries Solve ↗ ✓ Mark Design a Food Rating System completed Design a Food Rating System Solve ↗ ✓ Mark Design a Text Editor completed Design a Text Editor Solve ↗ ✓ Mark Design an Array Statistics Tracker completed Design an Array Statistics Tracker Solve ↗ ✓ Mark Design an Expression Tree With Evaluate Function completed Design an Expression Tree With Evaluate Function Solve ↗ ✓ Mark Design Browser History completed Design Browser History Solve ↗ ✓ Mark Design Circular Queue completed Design Circular Queue Solve ↗ ✓ Mark Design File System completed Design File System Solve ↗ ✓ Mark Design Front Middle Back Queue completed Design Front Middle Back Queue Solve ↗ ✓ Mark Design Hit Counter completed Design Hit Counter Solve ↗ ✓ Mark Design Linked List completed Design Linked List Solve ↗ ✓ Mark Design Memory Allocator completed Design Memory Allocator Solve ↗ ✓ Mark Design Search Autocomplete System completed Design Search Autocomplete System Solve ↗ ✓ Mark Design SQL completed Design SQL Solve ↗ ✓ Mark Determine Whether Matrix Can Be Obtained By Rotation completed Determine Whether Matrix Can Be Obtained By Rotation Solve ↗ ✓ Mark Detonate the Maximum Bombs completed Detonate the Maximum Bombs Solve ↗ ✓ Mark Diet Plan Performance completed Diet Plan Performance Solve ↗ ✓ Mark Difference Between Ones and Zeros in Row and Column completed Difference Between Ones and Zeros in Row and Column Solve ↗ ✓ Mark Digit Count in Range completed Digit Count in Range Solve ↗ ✓ Mark Distant Barcodes completed Distant Barcodes Solve ↗ ✓ Mark Distinct Numbers in Each Subarray completed Distinct Numbers in Each Subarray Solve ↗ ✓ Mark Distribute Candies Among Children I completed Distribute Candies Among Children I Solve ↗ ✓ Mark Distribute Candies Among Children III completed Distribute Candies Among Children III Solve ↗ ✓ Mark Distribute Coins in Binary Tree completed Distribute Coins in Binary Tree Solve ↗ ✓ Mark Divide Array Into Arrays With Max Difference completed Divide Array Into Arrays With Max Difference Solve ↗ ✓ Mark Double a Number Represented as a Linked List completed Double a Number Represented as a Linked List Solve ↗ ✓ Mark Double Modular Exponentiation completed Double Modular Exponentiation Solve ↗ ✓ Mark Duplicate Emails completed Duplicate Emails Solve ↗ ✓ Mark Employees With Deductions completed Employees With Deductions Solve ↗ ✓ Mark Encode and Decode Strings completed Encode and Decode Strings Solve ↗ ✓ Mark Encode and Decode TinyURL completed Encode and Decode TinyURL Solve ↗ ✓ Mark Equal Tree Partition completed Equal Tree Partition Solve ↗ ✓ Mark Excel Sheet Column Number completed Excel Sheet Column Number Solve ↗ ✓ Mark Excel Sheet Column Title completed Excel Sheet Column Title Solve ↗ ✓ Mark Exchange Seats completed Exchange Seats Solve ↗ ✓ Mark Fair Candy Swap completed Fair Candy Swap Solve ↗ ✓ Mark Fair Distribution of Cookies completed Fair Distribution of Cookies Solve ↗ ✓ Mark Find All Possible Recipes from Given Supplies completed Find All Possible Recipes from Given Supplies Solve ↗ ✓ Mark Find and Replace Pattern completed Find and Replace Pattern Solve ↗ ✓ Mark Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree completed Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree Solve ↗ ✓ Mark Find Cumulative Salary of an Employee completed Find Cumulative Salary of an Employee Solve ↗ ✓ Mark Find Distance in a Binary Tree completed Find Distance in a Binary Tree Solve ↗ ✓ Mark Find Good Days to Rob the Bank completed Find Good Days to Rob the Bank Solve ↗ ✓ Mark Find if Path Exists in Graph completed Find if Path Exists in Graph Solve ↗ ✓ Mark Find in Mountain Array completed Find in Mountain Array Solve ↗ ✓ Mark Find Interview Candidates completed Find Interview Candidates Solve ↗ ✓ Mark Find K-Length Substrings With No Repeated Characters completed Find K-Length Substrings With No Repeated Characters Solve ↗ ✓ Mark Find K-th Smallest Pair Distance completed Find K-th Smallest Pair Distance Solve ↗ ✓ Mark Find Maximum Non-decreasing Array Length completed Find Maximum Non-decreasing Array Length Solve ↗ ✓ Mark Find Minimum Time to Finish All Jobs II completed Find Minimum Time to Finish All Jobs II Solve ↗ ✓ Mark Find Missing Observations completed Find Missing Observations Solve ↗ ✓ Mark Find N Unique Integers Sum up to Zero completed Find N Unique Integers Sum up to Zero Solve ↗ ✓ Mark Find Nearest Point That Has the Same X or Y Coordinate completed Find Nearest Point That Has the Same X or Y Coordinate Solve ↗ ✓ Mark Find Number of Coins to Place in Tree Nodes completed Find Number of Coins to Place in Tree Nodes Solve ↗ ✓ Mark Find Number of Ways to Reach the K-th Stair completed Find Number of Ways to Reach the K-th Stair Solve ↗ ✓ Mark Find the Celebrity completed Find the Celebrity Solve ↗ ✓ Mark Find the City With the Smallest Number of Neighbors at a Threshold Distance completed Find the City With the Smallest Number of Neighbors at a Threshold Distance Solve ↗ ✓ Mark Find the Closest Palindrome completed Find the Closest Palindrome Solve ↗ ✓ Mark Find the Difference completed Find the Difference Solve ↗ ✓ Mark Find the Difference of Two Arrays completed Find the Difference of Two Arrays Solve ↗ ✓ Mark Find the Divisibility Array of a String completed Find the Divisibility Array of a String Solve ↗ ✓ Mark Find the Highest Altitude completed Find the Highest Altitude Solve ↗ ✓ Mark Find the Index of the Large Integer completed Find the Index of the Large Integer Solve ↗ ✓ Mark Find the K-or of an Array completed Find the K-or of an Array Solve ↗ ✓ Mark Find the K-Sum of an Array completed Find the K-Sum of an Array Solve ↗ ✓ Mark Find the Maximum Achievable Number completed Find the Maximum Achievable Number Solve ↗ ✓ Mark Find the Maximum Number of Elements in Subset completed Find the Maximum Number of Elements in Subset Solve ↗ ✓ Mark Find the Median of the Uniqueness Array completed Find the Median of the Uniqueness Array Solve ↗ ✓ Mark Find the Minimum and Maximum Number of Nodes Between Critical Points completed Find the Minimum and Maximum Number of Nodes Between Critical Points Solve ↗ ✓ Mark Find the Minimum Area to Cover All Ones II completed Find the Minimum Area to Cover All Ones II Solve ↗ ✓ Mark Find the Missing IDs completed Find the Missing IDs Solve ↗ ✓ Mark Find the Number of Subarrays Where Boundary Elements Are Maximum completed Find the Number of Subarrays Where Boundary Elements Are Maximum Solve ↗ ✓ Mark Find the Pivot Integer completed Find the Pivot Integer Solve ↗ ✓ Mark Find the Substring With Maximum Cost completed Find the Substring With Maximum Cost Solve ↗ ✓ Mark Find the Team Size completed Find the Team Size Solve ↗ ✓ Mark Find Total Time Spent by Each Employee completed Find Total Time Spent by Each Employee Solve ↗ ✓ Mark Find Winner on a Tic Tac Toe Game completed Find Winner on a Tic Tac Toe Game Solve ↗ ✓ Mark Find Words That Can Be Formed by Characters completed Find Words That Can Be Formed by Characters Solve ↗ ✓ Mark Find Xor-Beauty of Array completed Find Xor-Beauty of Array Solve ↗ ✓ Mark Flatten Nested List Iterator completed Flatten Nested List Iterator Solve ↗ ✓ Mark Flip String to Monotone Increasing completed Flip String to Monotone Increasing Solve ↗ ✓ Mark Form Array by Concatenating Subarrays of Another Array completed Form Array by Concatenating Subarrays of Another Array Solve ↗ ✓ Mark Friendly Movies Streamed Last Month completed Friendly Movies Streamed Last Month Solve ↗ ✓ Mark Frog Jump completed Frog Jump Solve ↗ ✓ Mark Game of Life completed Game of Life Solve ↗ ✓ Mark Game Play Analysis IV completed Game Play Analysis IV Solve ↗ ✓ Mark GCD Sort of an Array completed GCD Sort of an Array Solve ↗ ✓ Mark Generate Binary Strings Without Adjacent Zeros completed Generate Binary Strings Without Adjacent Zeros Solve ↗ ✓ Mark Get Watched Videos by Your Friends completed Get Watched Videos by Your Friends Solve ↗ ✓ Mark Global and Local Inversions completed Global and Local Inversions Solve ↗ ✓ Mark Grand Slam Titles completed Grand Slam Titles Solve ↗ ✓ Mark Gray Code completed Gray Code Solve ↗ ✓ Mark Grumpy Bookstore Owner completed Grumpy Bookstore Owner Solve ↗ ✓ Mark Guess Number Higher or Lower completed Guess Number Higher or Lower Solve ↗ ✓ Mark Guess the Word completed Guess the Word Solve ↗ ✓ Mark Handshakes That Don't Cross completed Handshakes That Don't Cross Solve ↗ ✓ Mark High Five completed High Five Solve ↗ ✓ Mark House Robber IV completed House Robber IV Solve ↗ ✓ Mark How Many Numbers Are Smaller Than the Current Number completed How Many Numbers Are Smaller Than the Current Number Solve ↗ ✓ Mark Image Smoother completed Image Smoother Solve ↗ ✓ Mark Index Pairs of a String completed Index Pairs of a String Solve ↗ ✓ Mark Insert Delete GetRandom O(1) - Duplicates allowed completed Insert Delete GetRandom O(1) - Duplicates allowed Solve ↗ ✓ Mark Insert into a Binary Search Tree completed Insert into a Binary Search Tree Solve ↗ ✓ Mark Insufficient Nodes in Root to Leaf Paths completed Insufficient Nodes in Root to Leaf Paths Solve ↗ ✓ Mark Interleaving String completed Interleaving String Solve ↗ ✓ Mark Intersection of Two Arrays II completed Intersection of Two Arrays II Solve ↗ ✓ Mark Interval List Intersections completed Interval List Intersections Solve ↗ ✓ Mark Invalid Tweets completed Invalid Tweets Solve ↗ ✓ Mark IPO completed IPO Solve ↗ ✓ Mark Island Perimeter completed Island Perimeter Solve ↗ ✓ Mark Jump Game VIII completed Jump Game VIII Solve ↗ ✓ Mark K Divisible Elements Subarrays completed K Divisible Elements Subarrays Solve ↗ ✓ Mark K-th Smallest in Lexicographical Order completed K-th Smallest in Lexicographical Order Solve ↗ ✓ Mark Keys and Rooms completed Keys and Rooms Solve ↗ ✓ Mark Kth Distinct String in an Array completed Kth Distinct String in an Array Solve ↗ ✓ Mark Kth Largest Sum in a Binary Tree completed Kth Largest Sum in a Binary Tree Solve ↗ ✓ Mark Largest Divisible Subset completed Largest Divisible Subset Solve ↗ ✓ Mark Largest Multiple of Three completed Largest Multiple of Three Solve ↗ ✓ Mark Largest Odd Number in String completed Largest Odd Number in String Solve ↗ ✓ Mark Largest Unique Number completed Largest Unique Number Solve ↗ ✓ Mark Last Person to Fit in the Bus completed Last Person to Fit in the Bus Solve ↗ ✓ Mark Last Stone Weight completed Last Stone Weight Solve ↗ ✓ Mark Lemonade Change completed Lemonade Change Solve ↗ ✓ Mark Length of Longest V-Shaped Diagonal Segment completed Length of Longest V-Shaped Diagonal Segment Solve ↗ ✓ Mark Lexicographical Numbers completed Lexicographical Numbers Solve ↗ ✓ Mark Lexicographically Minimum String After Removing Stars completed Lexicographically Minimum String After Removing Stars Solve ↗ ✓ Mark List the Products Ordered in a Period completed List the Products Ordered in a Period Solve ↗ ✓ Mark Logger Rate Limiter completed Logger Rate Limiter Solve ↗ ✓ Mark Longest Common Subpath completed Longest Common Subpath Solve ↗ ✓ Mark Longest Happy String completed Longest Happy String Solve ↗ ✓ Mark Longest Harmonious Subsequence completed Longest Harmonious Subsequence Solve ↗ ✓ Mark Longest Increasing Path in a Matrix completed Longest Increasing Path in a Matrix Solve ↗ ✓ Mark Longest Repeating Substring completed Longest Repeating Substring Solve ↗ ✓ Mark Longest Square Streak in an Array completed Longest Square Streak in an Array Solve ↗ ✓ Mark Longest Subarray of 1's After Deleting One Element completed Longest Subarray of 1's After Deleting One Element Solve ↗ ✓ Mark Longest Subarray With Maximum Bitwise AND completed Longest Subarray With Maximum Bitwise AND Solve ↗ ✓ Mark Longest Substring with At Least K Repeating Characters completed Longest Substring with At Least K Repeating Characters Solve ↗ ✓ Mark Longest Substring with At Most K Distinct Characters completed Longest Substring with At Most K Distinct Characters Solve ↗ ✓ Mark Longest Winning Streak completed Longest Winning Streak Solve ↗ ✓ Mark Loud and Rich completed Loud and Rich Solve ↗ ✓ Mark Lowest Common Ancestor of a Binary Tree IV completed Lowest Common Ancestor of a Binary Tree IV Solve ↗ ✓ Mark Magnetic Force Between Two Balls completed Magnetic Force Between Two Balls Solve ↗ ✓ Mark Make Three Strings Equal completed Make Three Strings Equal Solve ↗ ✓ Mark Max Chunks To Make Sorted completed Max Chunks To Make Sorted Solve ↗ ✓ Mark Max Number of K-Sum Pairs completed Max Number of K-Sum Pairs Solve ↗ ✓ Mark Max Points on a Line completed Max Points on a Line Solve ↗ ✓ Mark Max Stack completed Max Stack Solve ↗ ✓ Mark Maximal Range That Each Element Is Maximum in It completed Maximal Range That Each Element Is Maximum in It Solve ↗ ✓ Mark Maximize Distance to Closest Person completed Maximize Distance to Closest Person Solve ↗ ✓ Mark Maximize Happiness of Selected Children completed Maximize Happiness of Selected Children Solve ↗ ✓ Mark Maximize Number of Subsequences in a String completed Maximize Number of Subsequences in a String Solve ↗ ✓ Mark Maximize the Beauty of the Garden completed Maximize the Beauty of the Garden Solve ↗ ✓ Mark Maximize the Profit as the Salesman completed Maximize the Profit as the Salesman Solve ↗ ✓ Mark Maximize Y‐Sum by Picking a Triplet of Distinct X‐Values completed Maximize Y‐Sum by Picking a Triplet of Distinct X‐Values Solve ↗ ✓ Mark Maximum Alternating Subarray Sum completed Maximum Alternating Subarray Sum Solve ↗ ✓ Mark Maximum Average Subtree completed Maximum Average Subtree Solve ↗ ✓ Mark Maximum Bags With Full Capacity of Rocks completed Maximum Bags With Full Capacity of Rocks Solve ↗ ✓ Mark Maximum Balanced Subsequence Sum completed Maximum Balanced Subsequence Sum Solve ↗ ✓ Mark Maximum Calories Burnt from Jumps completed Maximum Calories Burnt from Jumps Solve ↗ ✓ Mark Maximum Candies Allocated to K Children completed Maximum Candies Allocated to K Children Solve ↗ ✓ Mark Maximum Consecutive Floors Without Special Floors completed Maximum Consecutive Floors Without Special Floors Solve ↗ ✓ Mark Maximum Difference Between Node and Ancestor completed Maximum Difference Between Node and Ancestor Solve ↗ ✓ Mark Maximum Element After Decreasing and Rearranging completed Maximum Element After Decreasing and Rearranging Solve ↗ ✓ Mark Maximum Erasure Value completed Maximum Erasure Value Solve ↗ ✓ Mark Maximum Frequency Stack completed Maximum Frequency Stack Solve ↗ ✓ Mark Maximum Length of Pair Chain completed Maximum Length of Pair Chain Solve ↗ ✓ Mark Maximum Linear Stock Score completed Maximum Linear Stock Score Solve ↗ ✓ Mark Maximum Matching of Players With Trainers completed Maximum Matching of Players With Trainers Solve ↗ ✓ Mark Maximum Median Sum of Subsequences of Size 3 completed Maximum Median Sum of Subsequences of Size 3 Solve ↗ ✓ Mark Maximum Nesting Depth of the Parentheses completed Maximum Nesting Depth of the Parentheses Solve ↗ ✓ Mark Maximum Number of Achievable Transfer Requests completed Maximum Number of Achievable Transfer Requests Solve ↗ ✓ Mark Maximum Number of Non-Overlapping Substrings completed Maximum Number of Non-Overlapping Substrings Solve ↗ ✓ Mark Maximum Number of Robots Within Budget completed Maximum Number of Robots Within Budget Solve ↗ ✓ Mark Maximum of Minimum Values in All Subarrays completed Maximum of Minimum Values in All Subarrays Solve ↗ ✓ Mark Maximum Score Words Formed by Letters completed Maximum Score Words Formed by Letters Solve ↗ ✓ Mark Maximum Star Sum of a Graph completed Maximum Star Sum of a Graph Solve ↗ ✓ Mark Maximum Subarray Sum with One Deletion completed Maximum Subarray Sum with One Deletion Solve ↗ ✓ Mark Maximum Sum Circular Subarray completed Maximum Sum Circular Subarray Solve ↗ ✓ Mark Maximum Sum of Almost Unique Subarray completed Maximum Sum of Almost Unique Subarray Solve ↗ ✓ Mark Maximum Sum Score of Array completed Maximum Sum Score of Array Solve ↗ ✓ Mark Maximum Sum With at Most K Elements completed Maximum Sum With at Most K Elements Solve ↗ ✓ Mark Maximum Swap completed Maximum Swap Solve ↗ ✓ Mark Maximum Total from Optimal Activation Order completed Maximum Total from Optimal Activation Order Solve ↗ ✓ Mark Maximum Twin Sum of a Linked List completed Maximum Twin Sum of a Linked List Solve ↗ ✓ Mark Meeting Rooms completed Meeting Rooms Solve ↗ ✓ Mark Meeting Rooms III completed Meeting Rooms III Solve ↗ ✓ Mark Merge Operations to Turn Array Into a Palindrome completed Merge Operations to Turn Array Into a Palindrome Solve ↗ ✓ Mark Min Cost to Connect All Points completed Min Cost to Connect All Points Solve ↗ ✓ Mark Minesweeper completed Minesweeper Solve ↗ ✓ Mark Minimize the Difference Between Target and Chosen Elements completed Minimize the Difference Between Target and Chosen Elements Solve ↗ ✓ Mark Minimized Maximum of Products Distributed to Any Store completed Minimized Maximum of Products Distributed to Any Store Solve ↗ ✓ Mark Minimum Array Sum completed Minimum Array Sum Solve ↗ ✓ Mark Minimum Average of Smallest and Largest Elements completed Minimum Average of Smallest and Largest Elements Solve ↗ ✓ Mark Minimum Cost For Tickets completed Minimum Cost For Tickets Solve ↗ ✓ Mark Minimum Cost to Connect Sticks completed Minimum Cost to Connect Sticks Solve ↗ ✓ Mark Minimum Cost to Cut a Stick completed Minimum Cost to Cut a Stick Solve ↗ ✓ Mark Minimum Cost to Hire K Workers completed Minimum Cost to Hire K Workers Solve ↗ ✓ Mark Minimum Cost to Merge Stones completed Minimum Cost to Merge Stones Solve ↗ ✓ Mark Minimum Degree of a Connected Trio in a Graph completed Minimum Degree of a Connected Trio in a Graph Solve ↗ ✓ Mark Minimum Difference Between Largest and Smallest Value in Three Moves completed Minimum Difference Between Largest and Smallest Value in Three Moves Solve ↗ ✓ Mark Minimum Difficulty of a Job Schedule completed Minimum Difficulty of a Job Schedule Solve ↗ ✓ Mark Minimum Falling Path Sum completed Minimum Falling Path Sum Solve ↗ ✓ Mark Minimum Garden Perimeter to Collect Enough Apples completed Minimum Garden Perimeter to Collect Enough Apples Solve ↗ ✓ Mark Minimum Genetic Mutation completed Minimum Genetic Mutation Solve ↗ ✓ Mark Minimum Height Trees completed Minimum Height Trees Solve ↗ ✓ Mark Minimum Knight Moves completed Minimum Knight Moves Solve ↗ ✓ Mark Minimum Length of String After Deleting Similar Ends completed Minimum Length of String After Deleting Similar Ends Solve ↗ ✓ Mark Minimum Money Required Before Transactions completed Minimum Money Required Before Transactions Solve ↗ ✓ Mark Minimum Number of Coins to be Added completed Minimum Number of Coins to be Added Solve ↗ ✓ Mark Minimum Number of Moves to Make Palindrome completed Minimum Number of Moves to Make Palindrome Solve ↗ ✓ Mark Minimum Number of Moves to Seat Everyone completed Minimum Number of Moves to Seat Everyone Solve ↗ ✓ Mark Minimum Number of Operations to Make Elements in Array Distinct completed Minimum Number of Operations to Make Elements in Array Distinct Solve ↗ ✓ Mark Minimum Number of Operations to Move All Balls to Each Box completed Minimum Number of Operations to Move All Balls to Each Box Solve ↗ ✓ Mark Minimum Number of Operations to Sort a Binary Tree by Level completed Minimum Number of Operations to Sort a Binary Tree by Level Solve ↗ ✓ Mark Minimum Number of Pushes to Type Word I completed Minimum Number of Pushes to Type Word I Solve ↗ ✓ Mark Minimum Number of Refueling Stops completed Minimum Number of Refueling Stops Solve ↗ ✓ Mark Minimum Number of Steps to Make Two Strings Anagram completed Minimum Number of Steps to Make Two Strings Anagram Solve ↗ ✓ Mark Minimum Number of Swaps to Make the String Balanced completed Minimum Number of Swaps to Make the String Balanced Solve ↗ ✓ Mark Minimum Numbers of Function Calls to Make Target Array completed Minimum Numbers of Function Calls to Make Target Array Solve ↗ ✓ Mark Minimum Operations to Make the Array Alternating completed Minimum Operations to Make the Array Alternating Solve ↗ ✓ Mark Minimum Operations to Make the Array K-Increasing completed Minimum Operations to Make the Array K-Increasing Solve ↗ ✓ Mark Minimum Operations to Remove Adjacent Ones in Matrix completed Minimum Operations to Remove Adjacent Ones in Matrix Solve ↗ ✓ Mark Minimum Removals to Balance Array completed Minimum Removals to Balance Array Solve ↗ ✓ Mark Minimum Right Shifts to Sort the Array completed Minimum Right Shifts to Sort the Array Solve ↗ ✓ Mark Minimum Rounds to Complete All Tasks completed Minimum Rounds to Complete All Tasks Solve ↗ ✓ Mark Minimum Score After Removals on a Tree completed Minimum Score After Removals on a Tree Solve ↗ ✓ Mark Minimum Sensors to Cover Grid completed Minimum Sensors to Cover Grid Solve ↗ ✓ Mark Minimum Space Wasted From Packaging completed Minimum Space Wasted From Packaging Solve ↗ ✓ Mark Minimum Stability Factor of Array completed Minimum Stability Factor of Array Solve ↗ ✓ Mark Minimum Sum of Four Digit Number After Splitting Digits completed Minimum Sum of Four Digit Number After Splitting Digits Solve ↗ ✓ Mark Minimum Sum of Squared Difference completed Minimum Sum of Squared Difference Solve ↗ ✓ Mark Minimum Swaps To Make Sequences Increasing completed Minimum Swaps To Make Sequences Increasing Solve ↗ ✓ Mark Minimum Time Difference completed Minimum Time Difference Solve ↗ ✓ Mark Minimum Time to Activate String completed Minimum Time to Activate String Solve ↗ ✓ Mark Missing Element in Sorted Array completed Missing Element in Sorted Array Solve ↗ ✓ Mark Monotone Increasing Digits completed Monotone Increasing Digits Solve ↗ ✓ Mark Most Common Word completed Most Common Word Solve ↗ ✓ Mark Most Frequent IDs completed Most Frequent IDs Solve ↗ ✓ Mark Most Frequent Subtree Sum completed Most Frequent Subtree Sum Solve ↗ ✓ Mark Most Profit Assigning Work completed Most Profit Assigning Work Solve ↗ ✓ Mark Most Stones Removed with Same Row or Column completed Most Stones Removed with Same Row or Column Solve ↗ ✓ Mark Move Pieces to Obtain a String completed Move Pieces to Obtain a String Solve ↗ ✓ Mark Moving Average from Data Stream completed Moving Average from Data Stream Solve ↗ ✓ Mark My Calendar I completed My Calendar I Solve ↗ ✓ Mark N-Queens II completed N-Queens II Solve ↗ ✓ Mark N-th Tribonacci Number completed N-th Tribonacci Number Solve ↗ ✓ Mark Nearest Exit from Entrance in Maze completed Nearest Exit from Entrance in Maze Solve ↗ ✓ Mark Nested List Weight Sum completed Nested List Weight Sum Solve ↗ ✓ Mark Network Delay Time completed Network Delay Time Solve ↗ ✓ Mark New 21 Game completed New 21 Game Solve ↗ ✓ Mark Next Palindrome Using Same Digits completed Next Palindrome Using Same Digits Solve ↗ ✓ Mark NPV Queries completed NPV Queries Solve ↗ ✓ Mark Nth Highest Salary completed Nth Highest Salary Solve ↗ ✓ Mark Number of Atoms completed Number of Atoms Solve ↗ ✓ Mark Number of Calls Between Two Persons completed Number of Calls Between Two Persons Solve ↗ ✓ Mark Number of Days in a Month completed Number of Days in a Month Solve ↗ ✓ Mark Number of Dice Rolls With Target Sum completed Number of Dice Rolls With Target Sum Solve ↗ ✓ Mark Number of Digit One completed Number of Digit One Solve ↗ ✓ Mark Number of Distinct Averages completed Number of Distinct Averages Solve ↗ ✓ Mark Number of Distinct Islands II completed Number of Distinct Islands II Solve ↗ ✓ Mark Number of Good Pairs completed Number of Good Pairs Solve ↗ ✓ Mark Number of Laser Beams in a Bank completed Number of Laser Beams in a Bank Solve ↗ ✓ Mark Number of Operations to Make Network Connected completed Number of Operations to Make Network Connected Solve ↗ ✓ Mark Number of Recent Calls completed Number of Recent Calls Solve ↗ ✓ Mark Number of Sets of K Non-Overlapping Line Segments completed Number of Sets of K Non-Overlapping Line Segments Solve ↗ ✓ Mark Number of Smooth Descent Periods of a Stock completed Number of Smooth Descent Periods of a Stock Solve ↗ ✓ Mark Number of Steps to Reduce a Number in Binary Representation to One completed Number of Steps to Reduce a Number in Binary Representation to One Solve ↗ ✓ Mark Number of Students Unable to Eat Lunch completed Number of Students Unable to Eat Lunch Solve ↗ ✓ Mark Number of Submatrices That Sum to Target completed Number of Submatrices That Sum to Target Solve ↗ ✓ Mark Number of Subsequences That Satisfy the Given Sum Condition completed Number of Subsequences That Satisfy the Given Sum Condition Solve ↗ ✓ Mark Number of Substrings Containing All Three Characters completed Number of Substrings Containing All Three Characters Solve ↗ ✓ Mark Number of Times a Driver Was a Passenger completed Number of Times a Driver Was a Passenger Solve ↗ ✓ Mark Number of Unique Categories completed Number of Unique Categories Solve ↗ ✓ Mark Number of Visible People in a Queue completed Number of Visible People in a Queue Solve ↗ ✓ Mark Number of Ways to Arrive at Destination completed Number of Ways to Arrive at Destination Solve ↗ ✓ Mark Number of Ways to Split Array completed Number of Ways to Split Array Solve ↗ ✓ Mark Number of Zero-Filled Subarrays completed Number of Zero-Filled Subarrays Solve ↗ ✓ Mark Numbers At Most N Given Digit Set completed Numbers At Most N Given Digit Set Solve ↗ ✓ Mark Optimal Account Balancing completed Optimal Account Balancing Solve ↗ ✓ Mark Optimal Division completed Optimal Division Solve ↗ ✓ Mark Orderly Queue completed Orderly Queue Solve ↗ ✓ Mark Pairs of Songs With Total Durations Divisible by 60 completed Pairs of Songs With Total Durations Divisible by 60 Solve ↗ ✓ Mark Palindrome Partitioning II completed Palindrome Partitioning II Solve ↗ ✓ Mark Parsing A Boolean Expression completed Parsing A Boolean Expression Solve ↗ ✓ Mark Partition Array According to Given Pivot completed Partition Array According to Given Pivot Solve ↗ ✓ Mark Partition Array for Maximum Sum completed Partition Array for Maximum Sum Solve ↗ ✓ Mark Partition Array Into Two Arrays to Minimize Sum Difference completed Partition Array Into Two Arrays to Minimize Sum Difference Solve ↗ ✓ Mark Partition Array Such That Maximum Difference Is K completed Partition Array Such That Maximum Difference Is K Solve ↗ ✓ Mark Partition to K Equal Sum Subsets completed Partition to K Equal Sum Subsets Solve ↗ ✓ Mark Path Sum II completed Path Sum II Solve ↗ ✓ Mark Path with Maximum Gold completed Path with Maximum Gold Solve ↗ ✓ Mark Path With Maximum Minimum Value completed Path With Maximum Minimum Value Solve ↗ ✓ Mark Path With Minimum Effort completed Path With Minimum Effort Solve ↗ ✓ Mark Percentage of Users Attended a Contest completed Percentage of Users Attended a Contest Solve ↗ ✓ Mark Populating Next Right Pointers in Each Node II completed Populating Next Right Pointers in Each Node II Solve ↗ ✓ Mark Power of Four completed Power of Four Solve ↗ ✓ Mark Power of Three completed Power of Three Solve ↗ ✓ Mark Predict the Winner completed Predict the Winner Solve ↗ ✓ Mark Prime Arrangements completed Prime Arrangements Solve ↗ ✓ Mark Prime Number of Set Bits in Binary Representation completed Prime Number of Set Bits in Binary Representation Solve ↗ ✓ Mark Prison Cells After N Days completed Prison Cells After N Days Solve ↗ ✓ Mark Product Price at a Given Date completed Product Price at a Given Date Solve ↗ ✓ Mark Product Sales Analysis II completed Product Sales Analysis II Solve ↗ ✓ Mark Product Sales Analysis IV completed Product Sales Analysis IV Solve ↗ ✓ Mark Product Sales Analysis V completed Product Sales Analysis V Solve ↗ ✓ Mark Product's Price for Each Store completed Product's Price for Each Store Solve ↗ ✓ Mark Products With Three or More Orders in Two Consecutive Years completed Products With Three or More Orders in Two Consecutive Years Solve ↗ ✓ Mark Pseudo-Palindromic Paths in a Binary Tree completed Pseudo-Palindromic Paths in a Binary Tree Solve ↗ ✓ Mark Queries on a Permutation With Key completed Queries on a Permutation With Key Solve ↗ ✓ Mark Queries Quality and Percentage completed Queries Quality and Percentage Solve ↗ ✓ Mark Rabbits in Forest completed Rabbits in Forest Solve ↗ ✓ Mark Range Sum of BST completed Range Sum of BST Solve ↗ ✓ Mark Range Sum Query 2D - Immutable completed Range Sum Query 2D - Immutable Solve ↗ ✓ Mark Rank Scores completed Rank Scores Solve ↗ ✓ Mark Rearrange Characters to Make Target String completed Rearrange Characters to Make Target String Solve ↗ ✓ Mark Rearrange Products Table completed Rearrange Products Table Solve ↗ ✓ Mark Recover a Tree From Preorder Traversal completed Recover a Tree From Preorder Traversal Solve ↗ ✓ Mark Redundant Connection completed Redundant Connection Solve ↗ ✓ Mark Reformat Department Table completed Reformat Department Table Solve ↗ ✓ Mark Regions Cut By Slashes completed Regions Cut By Slashes Solve ↗ ✓ Mark Relative Sort Array completed Relative Sort Array Solve ↗ ✓ Mark Relocate Marbles completed Relocate Marbles Solve ↗ ✓ Mark Remove All Occurrences of a Substring completed Remove All Occurrences of a Substring Solve ↗ ✓ Mark Remove Covered Intervals completed Remove Covered Intervals Solve ↗ ✓ Mark Remove Duplicates from Sorted List II completed Remove Duplicates from Sorted List II Solve ↗ ✓ Mark Remove Linked List Elements completed Remove Linked List Elements Solve ↗ ✓ Mark Remove Outermost Parentheses completed Remove Outermost Parentheses Solve ↗ ✓ Mark Remove Palindromic Subsequences completed Remove Palindromic Subsequences Solve ↗ ✓ Mark Remove Sub-Folders from the Filesystem completed Remove Sub-Folders from the Filesystem Solve ↗ ✓ Mark Remove Vowels from a String completed Remove Vowels from a String Solve ↗ ✓ Mark Reorder Routes to Make All Paths Lead to the City Zero completed Reorder Routes to Make All Paths Lead to the City Zero Solve ↗ ✓ Mark Reordered Power of 2 completed Reordered Power of 2 Solve ↗ ✓ Mark Repeated DNA Sequences completed Repeated DNA Sequences Solve ↗ ✓ Mark Replace Elements in an Array completed Replace Elements in an Array Solve ↗ ✓ Mark Replace Non-Coprime Numbers in Array completed Replace Non-Coprime Numbers in Array Solve ↗ ✓ Mark Replace Question Marks in String to Minimize Its Value completed Replace Question Marks in String to Minimize Its Value Solve ↗ ✓ Mark Restaurant Growth completed Restaurant Growth Solve ↗ ✓ Mark Restore IP Addresses completed Restore IP Addresses Solve ↗ ✓ Mark Reverse Bits completed Reverse Bits Solve ↗ ✓ Mark Reverse Words in a String II completed Reverse Words in a String II Solve ↗ ✓ Mark Robot Bounded In Circle completed Robot Bounded In Circle Solve ↗ ✓ Mark Rotate Function completed Rotate Function Solve ↗ ✓ Mark Row With Maximum Ones completed Row With Maximum Ones Solve ↗ ✓ Mark Running Sum of 1d Array completed Running Sum of 1d Array Solve ↗ ✓ Mark Sales Analysis I completed Sales Analysis I Solve ↗ ✓ Mark Sales Analysis II completed Sales Analysis II Solve ↗ ✓ Mark Sales Analysis III completed Sales Analysis III Solve ↗ ✓ Mark Sales by Day of the Week completed Sales by Day of the Week Solve ↗ ✓ Mark Score of a String completed Score of a String Solve ↗ ✓ Mark Sequentially Ordinal Rank Tracker completed Sequentially Ordinal Rank Tracker Solve ↗ ✓ Mark Serialize and Deserialize BST completed Serialize and Deserialize BST Solve ↗ ✓ Mark Serialize and Deserialize N-ary Tree completed Serialize and Deserialize N-ary Tree Solve ↗ ✓ Mark Shift 2D Grid completed Shift 2D Grid Solve ↗ ✓ Mark Shortest Bridge completed Shortest Bridge Solve ↗ ✓ Mark Shortest Distance from All Buildings completed Shortest Distance from All Buildings Solve ↗ ✓ Mark Shortest Matching Substring completed Shortest Matching Substring Solve ↗ ✓ Mark Shortest Palindrome completed Shortest Palindrome Solve ↗ ✓ Mark Shortest Path in a Grid with Obstacles Elimination completed Shortest Path in a Grid with Obstacles Elimination Solve ↗ ✓ Mark Shortest Path with Alternating Colors completed Shortest Path with Alternating Colors Solve ↗ ✓ Mark Shortest Subarray to be Removed to Make Array Sorted completed Shortest Subarray to be Removed to Make Array Sorted Solve ↗ ✓ Mark Shortest Subarray with Sum at Least K completed Shortest Subarray with Sum at Least K Solve ↗ ✓ Mark Shortest Unsorted Continuous Subarray completed Shortest Unsorted Continuous Subarray Solve ↗ ✓ Mark Shuffle the Array completed Shuffle the Array Solve ↗ ✓ Mark Sliding Window Median completed Sliding Window Median Solve ↗ ✓ Mark Smallest Number in Infinite Set completed Smallest Number in Infinite Set Solve ↗ ✓ Mark Smallest Subarrays With Maximum Bitwise OR completed Smallest Subarrays With Maximum Bitwise OR Solve ↗ ✓ Mark Smallest Subsequence of Distinct Characters completed Smallest Subsequence of Distinct Characters Solve ↗ ✓ Mark Snapshot Array completed Snapshot Array Solve ↗ ✓ Mark Solve the Equation completed Solve the Equation Solve ↗ ✓ Mark Sort Array by Increasing Frequency completed Sort Array by Increasing Frequency Solve ↗ ✓ Mark Sort Array By Parity II completed Sort Array By Parity II Solve ↗ ✓ Mark Sort Features by Popularity completed Sort Features by Popularity Solve ↗ ✓ Mark Soup Servings completed Soup Servings Solve ↗ ✓ Mark Spiral Matrix II completed Spiral Matrix II Solve ↗ ✓ Mark Split Array into Fibonacci Sequence completed Split Array into Fibonacci Sequence Solve ↗ ✓ Mark Split BST completed Split BST Solve ↗ ✓ Mark Split With Minimum Sum completed Split With Minimum Sum Solve ↗ ✓ Mark Step-By-Step Directions From a Binary Tree Node to Another completed Step-By-Step Directions From a Binary Tree Node to Another Solve ↗ ✓ Mark Strictly Palindromic Number completed Strictly Palindromic Number Solve ↗ ✓ Mark String Matching in an Array completed String Matching in an Array Solve ↗ ✓ Mark Students and Examinations completed Students and Examinations Solve ↗ ✓ Mark Students With Invalid Departments completed Students With Invalid Departments Solve ↗ ✓ Mark Subarrays Distinct Element Sum of Squares II completed Subarrays Distinct Element Sum of Squares II Solve ↗ ✓ Mark Substring Matching Pattern completed Substring Matching Pattern Solve ↗ ✓ Mark Substring With Largest Variance completed Substring With Largest Variance Solve ↗ ✓ Mark Subtree of Another Tree completed Subtree of Another Tree Solve ↗ ✓ Mark Successful Pairs of Spells and Potions completed Successful Pairs of Spells and Potions Solve ↗ ✓ Mark Sum of Beauty in the Array completed Sum of Beauty in the Array Solve ↗ ✓ Mark Sum of Beauty of All Substrings completed Sum of Beauty of All Substrings Solve ↗ ✓ Mark Sum of Digits in the Minimum Number completed Sum of Digits in the Minimum Number Solve ↗ ✓ Mark Sum of Left Leaves completed Sum of Left Leaves Solve ↗ ✓ Mark Sum of Nodes with Even-Valued Grandparent completed Sum of Nodes with Even-Valued Grandparent Solve ↗ ✓ Mark Sum of Number and Its Reverse completed Sum of Number and Its Reverse Solve ↗ ✓ Mark Sum of Root To Leaf Binary Numbers completed Sum of Root To Leaf Binary Numbers Solve ↗ ✓ Mark Sum of Scores of Built Strings completed Sum of Scores of Built Strings Solve ↗ ✓ Mark Sum Root to Leaf Numbers completed Sum Root to Leaf Numbers Solve ↗ ✓ Mark Summary Ranges completed Summary Ranges Solve ↗ ✓ Mark Super Washing Machines completed Super Washing Machines Solve ↗ ✓ Mark Swim in Rising Water completed Swim in Rising Water Solve ↗ ✓ Mark The K Weakest Rows in a Matrix completed The K Weakest Rows in a Matrix Solve ↗ ✓ Mark The Number of Employees Which Report to Each Employee completed The Number of Employees Which Report to Each Employee Solve ↗ ✓ Mark The Skyline Problem completed The Skyline Problem Solve ↗ ✓ Mark Third Maximum Number completed Third Maximum Number Solve ↗ ✓ Mark Threshold Majority Queries completed Threshold Majority Queries Solve ↗ ✓ Mark Time Needed to Rearrange a Binary String completed Time Needed to Rearrange a Binary String Solve ↗ ✓ Mark Time Taken to Cross the Door completed Time Taken to Cross the Door Solve ↗ ✓ Mark Transpose Matrix completed Transpose Matrix Solve ↗ ✓ Mark Triangle Judgement completed Triangle Judgement Solve ↗ ✓ Mark Trionic Array I completed Trionic Array I Solve ↗ ✓ Mark Trionic Array II completed Trionic Array II Solve ↗ ✓ Mark Trips and Users completed Trips and Users Solve ↗ ✓ Mark Two Sum BSTs completed Two Sum BSTs Solve ↗ ✓ Mark Two Sum Less Than K completed Two Sum Less Than K Solve ↗ ✓ Mark Ugly Number completed Ugly Number Solve ↗ ✓ Mark Ugly Number II completed Ugly Number II Solve ↗ ✓ Mark Uncrossed Lines completed Uncrossed Lines Solve ↗ ✓ Mark Unique Binary Search Trees II completed Unique Binary Search Trees II Solve ↗ ✓ Mark Unique Length-3 Palindromic Subsequences completed Unique Length-3 Palindromic Subsequences Solve ↗ ✓ Mark Unique Paths III completed Unique Paths III Solve ↗ ✓ Mark User Activity for the Past 30 Days I completed User Activity for the Past 30 Days I Solve ↗ ✓ Mark Users With Two Purchases Within Seven Days completed Users With Two Purchases Within Seven Days Solve ↗ ✓ Mark Valid Mountain Array completed Valid Mountain Array Solve ↗ ✓ Mark Valid Number completed Valid Number Solve ↗ ✓ Mark Valid Palindrome IV completed Valid Palindrome IV Solve ↗ ✓ Mark Valid Triangle Number completed Valid Triangle Number Solve ↗ ✓ Mark Valid Word Abbreviation completed Valid Word Abbreviation Solve ↗ ✓ Mark Walls and Gates completed Walls and Gates Solve ↗ ✓ Mark Warehouse Manager completed Warehouse Manager Solve ↗ ✓ Mark Word Pattern completed Word Pattern Solve ↗ ✓ Mark Word Subsets completed Word Subsets Solve ↗ ✓ Mark 3Sum With Multiplicity completed 3Sum With Multiplicity Solve ↗ ✓ Mark 4Sum II completed 4Sum II Solve ↗ ✓ Mark A Number After a Double Reversal completed A Number After a Double Reversal Solve ↗ ✓ Mark Active Users completed Active Users Solve ↗ ✓ Mark Add to Array-Form of Integer completed Add to Array-Form of Integer Solve ↗ ✓ Mark Adjacent Increasing Subarrays Detection I completed Adjacent Increasing Subarrays Detection I Solve ↗ ✓ Mark Advantage Shuffle completed Advantage Shuffle Solve ↗ ✓ Mark Alice and Bob Playing Flower Game completed Alice and Bob Playing Flower Game Solve ↗ ✓ Mark All Ancestors of a Node in a Directed Acyclic Graph completed All Ancestors of a Node in a Directed Acyclic Graph Solve ↗ ✓ Mark All People Report to the Given Manager completed All People Report to the Given Manager Solve ↗ ✓ Mark All Possible Full Binary Trees completed All Possible Full Binary Trees Solve ↗ ✓ Mark Allow One Function Call completed Allow One Function Call Solve ↗ ✓ Mark Alternating Digit Sum completed Alternating Digit Sum Solve ↗ ✓ Mark Alternating Groups I completed Alternating Groups I Solve ↗ ✓ Mark Analyze Organization Hierarchy completed Analyze Organization Hierarchy Solve ↗ ✓ Mark Apply Operations to an Array completed Apply Operations to an Array Solve ↗ ✓ Mark Apply Operations to Make All Array Elements Equal to Zero completed Apply Operations to Make All Array Elements Equal to Zero Solve ↗ ✓ Mark Apply Transform Over Each Element in Array completed Apply Transform Over Each Element in Array Solve ↗ ✓ Mark Arithmetic Slices completed Arithmetic Slices Solve ↗ ✓ Mark Arithmetic Slices II - Subsequence completed Arithmetic Slices II - Subsequence Solve ↗ ✓ Mark Array Reduce Transformation completed Array Reduce Transformation Solve ↗ ✓ Mark As Far from Land as Possible completed As Far from Land as Possible Solve ↗ ✓ Mark Average of Levels in Binary Tree completed Average of Levels in Binary Tree Solve ↗ ✓ Mark Average Waiting Time completed Average Waiting Time Solve ↗ ✓ Mark Bag of Tokens completed Bag of Tokens Solve ↗ ✓ Mark Balanced K-Factor Decomposition completed Balanced K-Factor Decomposition Solve ↗ ✓ Mark Bank Account Summary II completed Bank Account Summary II Solve ↗ ✓ Mark Base 7 completed Base 7 Solve ↗ ✓ Mark Beautiful Arrangement completed Beautiful Arrangement Solve ↗ ✓ Mark Beautiful Array completed Beautiful Array Solve ↗ ✓ Mark Beautiful Towers II completed Beautiful Towers II Solve ↗ ✓ Mark Best Meeting Point completed Best Meeting Point Solve ↗ ✓ Mark Best Sightseeing Pair completed Best Sightseeing Pair Solve ↗ ✓ Mark Best Time to Buy and Sell Stock V completed Best Time to Buy and Sell Stock V Solve ↗ ✓ Mark Best Time to Buy and Sell Stock with Cooldown completed Best Time to Buy and Sell Stock with Cooldown Solve ↗ ✓ Mark Biggest Single Number completed Biggest Single Number Solve ↗ ✓ Mark Binary Gap completed Binary Gap Solve ↗ ✓ Mark Binary Number with Alternating Bits completed Binary Number with Alternating Bits Solve ↗ ✓ Mark Binary Tree Coloring Game completed Binary Tree Coloring Game Solve ↗ ✓ Mark Binary Tree Level Order Traversal II completed Binary Tree Level Order Traversal II Solve ↗ ✓ Mark Binary Tree Longest Consecutive Sequence completed Binary Tree Longest Consecutive Sequence Solve ↗ ✓ Mark Binary Tree Preorder Traversal completed Binary Tree Preorder Traversal Solve ↗ ✓ Mark Binary Tree Pruning completed Binary Tree Pruning Solve ↗ ✓ Mark Binary Tree Tilt completed Binary Tree Tilt Solve ↗ ✓ Mark Binary Watch completed Binary Watch Solve ↗ ✓ Mark Bitwise ORs of Subarrays completed Bitwise ORs of Subarrays Solve ↗ ✓ Mark Brick Wall completed Brick Wall Solve ↗ ✓ Mark Brightest Position on Street completed Brightest Position on Street Solve ↗ ✓ Mark Building H2O completed Building H2O Solve ↗ ✓ Mark Button with Longest Push Time completed Button with Longest Push Time Solve ↗ ✓ Mark Buy Two Chocolates completed Buy Two Chocolates Solve ↗ ✓ Mark Cache With Time Limit completed Cache With Time Limit Solve ↗ ✓ Mark Calculate Money in Leetcode Bank completed Calculate Money in Leetcode Bank Solve ↗ ✓ Mark Cat and Mouse completed Cat and Mouse Solve ↗ ✓ Mark Change Minimum Characters to Satisfy One of Three Conditions completed Change Minimum Characters to Satisfy One of Three Conditions Solve ↗ ✓ Mark Check Balanced String completed Check Balanced String Solve ↗ ✓ Mark Check Completeness of a Binary Tree completed Check Completeness of a Binary Tree Solve ↗ ✓ Mark Check if a String Is an Acronym of Words completed Check if a String Is an Acronym of Words Solve ↗ ✓ Mark Check If a Word Occurs As a Prefix of Any Word in a Sentence completed Check If a Word Occurs As a Prefix of Any Word in a Sentence Solve ↗ ✓ Mark Check if All A's Appears Before All B's completed Check if All A's Appears Before All B's Solve ↗ ✓ Mark Check if All Characters Have Equal Number of Occurrences completed Check if All Characters Have Equal Number of Occurrences Solve ↗ ✓ Mark Check if All the Integers in a Range Are Covered completed Check if All the Integers in a Range Are Covered Solve ↗ ✓ Mark Check if Grid can be Cut into Sections completed Check if Grid can be Cut into Sections Solve ↗ ✓ Mark Check If It Is a Straight Line completed Check If It Is a Straight Line Solve ↗ ✓ Mark Check if Matrix Is X-Matrix completed Check if Matrix Is X-Matrix Solve ↗ ✓ Mark Check if Number is a Sum of Powers of Three completed Check if Number is a Sum of Powers of Three Solve ↗ ✓ Mark Check if One String Swap Can Make Strings Equal completed Check if One String Swap Can Make Strings Equal Solve ↗ ✓ Mark Check if the Rectangle Corner Is Reachable completed Check if the Rectangle Corner Is Reachable Solve ↗ ✓ Mark Check if the Sentence Is Pangram completed Check if the Sentence Is Pangram Solve ↗ ✓ Mark Check if Two Chessboard Squares Have the Same Color completed Check if Two Chessboard Squares Have the Same Color Solve ↗ ✓ Mark Check If Two String Arrays are Equivalent completed Check If Two String Arrays are Equivalent Solve ↗ ✓ Mark Check If Word Is Valid After Substitutions completed Check If Word Is Valid After Substitutions Solve ↗ ✓ Mark Check Knight Tour Configuration completed Check Knight Tour Configuration Solve ↗ ✓ Mark Cherry Pickup completed Cherry Pickup Solve ↗ ✓ Mark Cherry Pickup II completed Cherry Pickup II Solve ↗ ✓ Mark Circular Array Loop completed Circular Array Loop Solve ↗ ✓ Mark Circular Sentence completed Circular Sentence Solve ↗ ✓ Mark Clear Digits completed Clear Digits Solve ↗ ✓ Mark Closest Binary Search Tree Value completed Closest Binary Search Tree Value Solve ↗ ✓ Mark Closest Binary Search Tree Value II completed Closest Binary Search Tree Value II Solve ↗ ✓ Mark Closest Prime Numbers in Range completed Closest Prime Numbers in Range Solve ↗ ✓ Mark Clumsy Factorial completed Clumsy Factorial Solve ↗ ✓ Mark Collecting Chocolates completed Collecting Chocolates Solve ↗ ✓ Mark Combination Sum IV completed Combination Sum IV Solve ↗ ✓ Mark Complement of Base 10 Integer completed Complement of Base 10 Integer Solve ↗ ✓ Mark Complete Binary Tree Inserter completed Complete Binary Tree Inserter Solve ↗ ✓ Mark Consecutive Available Seats completed Consecutive Available Seats Solve ↗ ✓ Mark Consecutive Characters completed Consecutive Characters Solve ↗ ✓ Mark Consecutive Numbers Sum completed Consecutive Numbers Sum Solve ↗ ✓ Mark Consecutive Transactions with Increasing Amounts completed Consecutive Transactions with Increasing Amounts Solve ↗ ✓ Mark Construct Binary Tree from Preorder and Postorder Traversal completed Construct Binary Tree from Preorder and Postorder Traversal Solve ↗ ✓ Mark Construct K Palindrome Strings completed Construct K Palindrome Strings Solve ↗ ✓ Mark Construct Quad Tree completed Construct Quad Tree Solve ↗ ✓ Mark Construct String with Minimum Cost completed Construct String with Minimum Cost Solve ↗ ✓ Mark Construct the Lexicographically Largest Valid Sequence completed Construct the Lexicographically Largest Valid Sequence Solve ↗ ✓ Mark Construct the Rectangle completed Construct the Rectangle Solve ↗ ✓ Mark Contains Duplicate III completed Contains Duplicate III Solve ↗ ✓ Mark Continuous Subarrays completed Continuous Subarrays Solve ↗ ✓ Mark Convert 1D Array Into 2D Array completed Convert 1D Array Into 2D Array Solve ↗ ✓ Mark Convert a Number to Hexadecimal completed Convert a Number to Hexadecimal Solve ↗ ✓ Mark Convert an Array Into a 2D Array With Conditions completed Convert an Array Into a 2D Array With Conditions Solve ↗ ✓ Mark Convert Binary Number in a Linked List to Integer completed Convert Binary Number in a Linked List to Integer Solve ↗ ✓ Mark Convert Binary Search Tree to Sorted Doubly Linked List completed Convert Binary Search Tree to Sorted Doubly Linked List Solve ↗ ✓ Mark Convert Integer to the Sum of Two No-Zero Integers completed Convert Integer to the Sum of Two No-Zero Integers Solve ↗ ✓ Mark Convert the Temperature completed Convert the Temperature Solve ↗ ✓ Mark Corporate Flight Bookings completed Corporate Flight Bookings Solve ↗ ✓ Mark Count Beautiful Splits in an Array completed Count Beautiful Splits in an Array Solve ↗ ✓ Mark Count Collisions of Monkeys on a Polygon completed Count Collisions of Monkeys on a Polygon Solve ↗ ✓ Mark Count Collisions on a Road completed Count Collisions on a Road Solve ↗ ✓ Mark Count Complete Subarrays in an Array completed Count Complete Subarrays in an Array Solve ↗ ✓ Mark Count Complete Tree Nodes completed Count Complete Tree Nodes Solve ↗ ✓ Mark Count Covered Buildings completed Count Covered Buildings Solve ↗ ✓ Mark Count Days Without Meetings completed Count Days Without Meetings Solve ↗ ✓ Mark Count Different Palindromic Subsequences completed Count Different Palindromic Subsequences Solve ↗ ✓ Mark Count Good Nodes in Binary Tree completed Count Good Nodes in Binary Tree Solve ↗ ✓ Mark Count Good Triplets completed Count Good Triplets Solve ↗ ✓ Mark Count Hills and Valleys in an Array completed Count Hills and Valleys in an Array Solve ↗ ✓ Mark Count Items Matching a Rule completed Count Items Matching a Rule Solve ↗ ✓ Mark Count Nice Pairs in an Array completed Count Nice Pairs in an Array Solve ↗ ✓ Mark Count Nodes Equal to Average of Subtree completed Count Nodes Equal to Average of Subtree Solve ↗ ✓ Mark Count Nodes With the Highest Score completed Count Nodes With the Highest Score Solve ↗ ✓ Mark Count Number of Maximum Bitwise-OR Subsets completed Count Number of Maximum Bitwise-OR Subsets Solve ↗ ✓ Mark Count Number of Ways to Place Houses completed Count Number of Ways to Place Houses Solve ↗ ✓ Mark Count Odd Numbers in an Interval Range completed Count Odd Numbers in an Interval Range Solve ↗ ✓ Mark Count of Interesting Subarrays completed Count of Interesting Subarrays Solve ↗ ✓ Mark Count of Matches in Tournament completed Count of Matches in Tournament Solve ↗ ✓ Mark Count of Range Sum completed Count of Range Sum Solve ↗ ✓ Mark Count of Smaller Numbers After Self completed Count of Smaller Numbers After Self Solve ↗ ✓ Mark Count of Substrings Containing Every Vowel and K Consonants II completed Count of Substrings Containing Every Vowel and K Consonants II Solve ↗ ✓ Mark Count Operations to Obtain Zero completed Count Operations to Obtain Zero Solve ↗ ✓ Mark Count Pairs Whose Sum is Less than Target completed Count Pairs Whose Sum is Less than Target Solve ↗ ✓ Mark Count Palindromic Subsequences completed Count Palindromic Subsequences Solve ↗ ✓ Mark Count Salary Categories completed Count Salary Categories Solve ↗ ✓ Mark Count Sub Islands completed Count Sub Islands Solve ↗ ✓ Mark Count Subarrays Where Max Element Appears at Least K Times completed Count Subarrays Where Max Element Appears at Least K Times Solve ↗ ✓ Mark Count Subarrays With Fixed Bounds completed Count Subarrays With Fixed Bounds Solve ↗ ✓ Mark Count Subarrays With Median K completed Count Subarrays With Median K Solve ↗ ✓ Mark Count Subarrays With Score Less Than K completed Count Subarrays With Score Less Than K Solve ↗ ✓ Mark Count Submatrices With All Ones completed Count Submatrices With All Ones Solve ↗ ✓ Mark Count Substrings That Can Be Rearranged to Contain a String I completed Count Substrings That Can Be Rearranged to Contain a String I Solve ↗ ✓ Mark Count the Number of Arrays with K Matching Adjacent Elements completed Count the Number of Arrays with K Matching Adjacent Elements Solve ↗ ✓ Mark Count the Number of Complete Components completed Count the Number of Complete Components Solve ↗ ✓ Mark Count the Number of Consistent Strings completed Count the Number of Consistent Strings Solve ↗ ✓ Mark Count the Number of Good Subarrays completed Count the Number of Good Subarrays Solve ↗ ✓ Mark Count the Number of Ideal Arrays completed Count the Number of Ideal Arrays Solve ↗ ✓ Mark Count the Number of Inversions completed Count the Number of Inversions Solve ↗ ✓ Mark Count Total Number of Colored Cells completed Count Total Number of Colored Cells Solve ↗ ✓ Mark Count Unguarded Cells in the Grid completed Count Unguarded Cells in the Grid Solve ↗ ✓ Mark Count Unique Characters of All Substrings of a Given String completed Count Unique Characters of All Substrings of a Given String Solve ↗ ✓ Mark Count Univalue Subtrees completed Count Univalue Subtrees Solve ↗ ✓ Mark Count Visited Nodes in a Directed Graph completed Count Visited Nodes in a Directed Graph Solve ↗ ✓ Mark Count Vowel Substrings of a String completed Count Vowel Substrings of a String Solve ↗ ✓ Mark Count Ways To Build Good Strings completed Count Ways To Build Good Strings Solve ↗ ✓ Mark Couples Holding Hands completed Couples Holding Hands Solve ↗ ✓ Mark Crawler Log Folder completed Crawler Log Folder Solve ↗ ✓ Mark Create Binary Tree From Descriptions completed Create Binary Tree From Descriptions Solve ↗ ✓ Mark Create Maximum Number completed Create Maximum Number Solve ↗ ✓ Mark Create Target Array in the Given Order completed Create Target Array in the Given Order Solve ↗ ✓ Mark Customer Purchasing Behavior Analysis completed Customer Purchasing Behavior Analysis Solve ↗ ✓ Mark Data Stream as Disjoint Intervals completed Data Stream as Disjoint Intervals Solve ↗ ✓ Mark Day of the Year completed Day of the Year Solve ↗ ✓ Mark Debounce completed Debounce Solve ↗ ✓ Mark Decode the Message completed Decode the Message Solve ↗ ✓ Mark Decoded String at Index completed Decoded String at Index Solve ↗ ✓ Mark Decompress Run-Length Encoded List completed Decompress Run-Length Encoded List Solve ↗ ✓ Mark Deepest Leaves Sum completed Deepest Leaves Sum Solve ↗ ✓ Mark Defanging an IP Address completed Defanging an IP Address Solve ↗ ✓ Mark Degree of an Array completed Degree of an Array Solve ↗ ✓ Mark Delete Characters to Make Fancy String completed Delete Characters to Make Fancy String Solve ↗ ✓ Mark Delete Columns to Make Sorted completed Delete Columns to Make Sorted Solve ↗ ✓ Mark Delete Duplicate Folders in System completed Delete Duplicate Folders in System Solve ↗ ✓ Mark Delete Greatest Value in Each Row completed Delete Greatest Value in Each Row Solve ↗ ✓ Mark Delete Nodes And Return Forest completed Delete Nodes And Return Forest Solve ↗ ✓ Mark Delete Operation for Two Strings completed Delete Operation for Two Strings Solve ↗ ✓ Mark Delete the Middle Node of a Linked List completed Delete the Middle Node of a Linked List Solve ↗ ✓ Mark Describe the Painting completed Describe the Painting Solve ↗ ✓ Mark Design A Leaderboard completed Design A Leaderboard Solve ↗ ✓ Mark Design a Number Container System completed Design a Number Container System Solve ↗ ✓ Mark Design a Stack With Increment Operation completed Design a Stack With Increment Operation Solve ↗ ✓ Mark Design Circular Deque completed Design Circular Deque Solve ↗ ✓ Mark Design Excel Sum Formula completed Design Excel Sum Formula Solve ↗ ✓ Mark Design HashSet completed Design HashSet Solve ↗ ✓ Mark Design Log Storage System completed Design Log Storage System Solve ↗ ✓ Mark Design Snake Game completed Design Snake Game Solve ↗ ✓ Mark Design Task Manager completed Design Task Manager Solve ↗ ✓ Mark Design Underground System completed Design Underground System Solve ↗ ✓ Mark Destination City completed Destination City Solve ↗ ✓ Mark Destroying Asteroids completed Destroying Asteroids Solve ↗ ✓ Mark Detect Capital completed Detect Capital Solve ↗ ✓ Mark Detect Cycles in 2D Grid completed Detect Cycles in 2D Grid Solve ↗ ✓ Mark Detect Squares completed Detect Squares Solve ↗ ✓ Mark Determine if String Halves Are Alike completed Determine if String Halves Are Alike Solve ↗ ✓ Mark Determine if Two Strings Are Close completed Determine if Two Strings Are Close Solve ↗ ✓ Mark DI String Match completed DI String Match Solve ↗ ✓ Mark Diagonal Traverse II completed Diagonal Traverse II Solve ↗ ✓ Mark Difference Between Element Sum and Digit Sum of an Array completed Difference Between Element Sum and Digit Sum of an Array Solve ↗ ✓ Mark Dinner Plate Stacks completed Dinner Plate Stacks Solve ↗ ✓ Mark Display the First Three Rows completed Display the First Three Rows Solve ↗ ✓ Mark Distinct Subsequences II completed Distinct Subsequences II Solve ↗ ✓ Mark Distribute Candies to People completed Distribute Candies to People Solve ↗ ✓ Mark Distribute Elements Into Two Arrays I completed Distribute Elements Into Two Arrays I Solve ↗ ✓ Mark Distribute Money to Maximum Children completed Distribute Money to Maximum Children Solve ↗ ✓ Mark Divide Array Into Equal Pairs completed Divide Array Into Equal Pairs Solve ↗ ✓ Mark Divide Intervals Into Minimum Number of Groups completed Divide Intervals Into Minimum Number of Groups Solve ↗ ✓ Mark Divide Nodes Into the Maximum Number of Groups completed Divide Nodes Into the Maximum Number of Groups Solve ↗ ✓ Mark Divide Players Into Teams of Equal Skill completed Divide Players Into Teams of Equal Skill Solve ↗ ✓ Mark Divisible and Non-divisible Sums Difference completed Divisible and Non-divisible Sums Difference Solve ↗ ✓ Mark Divisor Game completed Divisor Game Solve ↗ ✓ Mark Dot Product of Two Sparse Vectors completed Dot Product of Two Sparse Vectors Solve ↗ ✓ Mark Dota2 Senate completed Dota2 Senate Solve ↗ ✓ Mark Duplicate Zeros completed Duplicate Zeros Solve ↗ ✓ Mark Element Appearing More Than 25% In Sorted Array completed Element Appearing More Than 25% In Sorted Array Solve ↗ ✓ Mark Elimination Game completed Elimination Game Solve ↗ ✓ Mark Employee Free Time completed Employee Free Time Solve ↗ ✓ Mark Employee Importance completed Employee Importance Solve ↗ ✓ Mark Employees Whose Manager Left the Company completed Employees Whose Manager Left the Company Solve ↗ ✓ Mark Encrypt and Decrypt Strings completed Encrypt and Decrypt Strings Solve ↗ ✓ Mark Equal Row and Column Pairs completed Equal Row and Column Pairs Solve ↗ ✓ Mark Erect the Fence completed Erect the Fence Solve ↗ ✓ Mark Escape a Large Maze completed Escape a Large Maze Solve ↗ ✓ Mark Escape the Spreading Fire completed Escape the Spreading Fire Solve ↗ ✓ Mark Evaluate Boolean Binary Tree completed Evaluate Boolean Binary Tree Solve ↗ ✓ Mark Even Odd Tree completed Even Odd Tree Solve ↗ ✓ Mark Event Emitter completed Event Emitter Solve ↗ ✓ Mark Expression Add Operators completed Expression Add Operators Solve ↗ ✓ Mark Extra Characters in a String completed Extra Characters in a String Solve ↗ ✓ Mark Factorial Trailing Zeroes completed Factorial Trailing Zeroes Solve ↗ ✓ Mark Falling Squares completed Falling Squares Solve ↗ ✓ Mark Filling Bookcase Shelves completed Filling Bookcase Shelves Solve ↗ ✓ Mark Filter Elements from Array completed Filter Elements from Array Solve ↗ ✓ Mark Final Array State After K Multiplication Operations I completed Final Array State After K Multiplication Operations I Solve ↗ ✓ Mark Final Prices With a Special Discount in a Shop completed Final Prices With a Special Discount in a Shop Solve ↗ ✓ Mark Final Value of Variable After Performing Operations completed Final Value of Variable After Performing Operations Solve ↗ ✓ Mark Find a Corresponding Node of a Binary Tree in a Clone of That Tree completed Find a Corresponding Node of a Binary Tree in a Clone of That Tree Solve ↗ ✓ Mark Find a Peak Element II completed Find a Peak Element II Solve ↗ ✓ Mark Find All K-Distant Indices in an Array completed Find All K-Distant Indices in an Array Solve ↗ ✓ Mark Find All People With Secret completed Find All People With Secret Solve ↗ ✓ Mark Find Bottom Left Tree Value completed Find Bottom Left Tree Value Solve ↗ ✓ Mark Find Building Where Alice and Bob Can Meet completed Find Building Where Alice and Bob Can Meet Solve ↗ ✓ Mark Find Center of Star Graph completed Find Center of Star Graph Solve ↗ ✓ Mark Find Closest Node to Given Two Nodes completed Find Closest Node to Given Two Nodes Solve ↗ ✓ Mark Find Closest Number to Zero completed Find Closest Number to Zero Solve ↗ ✓ Mark Find Closest Person completed Find Closest Person Solve ↗ ✓ Mark Find Common Elements Between Two Arrays completed Find Common Elements Between Two Arrays Solve ↗ ✓ Mark Find Duplicate File in System completed Find Duplicate File in System Solve ↗ ✓ Mark Find Duplicate Subtrees completed Find Duplicate Subtrees Solve ↗ ✓ Mark Find Elements in a Contaminated Binary Tree completed Find Elements in a Contaminated Binary Tree Solve ↗ ✓ Mark Find First Palindromic String in the Array completed Find First Palindromic String in the Array Solve ↗ ✓ Mark Find if Array Can Be Sorted completed Find if Array Can Be Sorted Solve ↗ ✓ Mark Find Kth Bit in Nth Binary String completed Find Kth Bit in Nth Binary String Solve ↗ ✓ Mark Find Largest Value in Each Tree Row completed Find Largest Value in Each Tree Row Solve ↗ ✓ Mark Find Leaves of Binary Tree completed Find Leaves of Binary Tree Solve ↗ ✓ Mark Find Longest Special Substring That Occurs Thrice I completed Find Longest Special Substring That Occurs Thrice I Solve ↗ ✓ Mark Find Lucky Integer in an Array completed Find Lucky Integer in an Array Solve ↗ ✓ Mark Find Minimum in Rotated Sorted Array II completed Find Minimum in Rotated Sorted Array II Solve ↗ ✓ Mark Find Minimum Time to Reach Last Room II completed Find Minimum Time to Reach Last Room II Solve ↗ ✓ Mark Find Mode in Binary Search Tree completed Find Mode in Binary Search Tree Solve ↗ ✓ Mark Find Most Frequent Vowel and Consonant completed Find Most Frequent Vowel and Consonant Solve ↗ ✓ Mark Find Numbers with Even Number of Digits completed Find Numbers with Even Number of Digits Solve ↗ ✓ Mark Find Occurrences of an Element in an Array completed Find Occurrences of an Element in an Array Solve ↗ ✓ Mark Find Players With Zero or One Losses completed Find Players With Zero or One Losses Solve ↗ ✓ Mark Find Resultant Array After Removing Anagrams completed Find Resultant Array After Removing Anagrams Solve ↗ ✓ Mark Find Right Interval completed Find Right Interval Solve ↗ ✓ Mark Find Score of an Array After Marking All Elements completed Find Score of an Array After Marking All Elements Solve ↗ ✓ Mark Find Servers That Handled Most Number of Requests completed Find Servers That Handled Most Number of Requests Solve ↗ ✓ Mark Find Smallest Common Element in All Rows completed Find Smallest Common Element in All Rows Solve ↗ ✓ Mark Find Smallest Letter Greater Than Target completed Find Smallest Letter Greater Than Target Solve ↗ ✓ Mark Find Special Substring of Length K completed Find Special Substring of Length K Solve ↗ ✓ Mark Find Subsequence of Length K With the Largest Sum completed Find Subsequence of Length K With the Largest Sum Solve ↗ ✓ Mark Find Target Indices After Sorting Array completed Find Target Indices After Sorting Array Solve ↗ ✓ Mark Find the Distance Value Between Two Arrays completed Find the Distance Value Between Two Arrays Solve ↗ ✓ Mark Find the K-th Character in String Game I completed Find the K-th Character in String Game I Solve ↗ ✓ Mark Find the K-th Character in String Game II completed Find the K-th Character in String Game II Solve ↗ ✓ Mark Find The K-th Lucky Number completed Find The K-th Lucky Number Solve ↗ ✓ Mark Find the Kth Smallest Sum of a Matrix With Sorted Rows completed Find the Kth Smallest Sum of a Matrix With Sorted Rows Solve ↗ ✓ Mark Find the Largest Palindrome Divisible by K completed Find the Largest Palindrome Divisible by K Solve ↗ ✓ Mark Find the Length of the Longest Common Prefix completed Find the Length of the Longest Common Prefix Solve ↗ ✓ Mark Find the Lexicographically Largest String From the Box I completed Find the Lexicographically Largest String From the Box I Solve ↗ ✓ Mark Find the Longest Balanced Substring of a Binary String completed Find the Longest Balanced Substring of a Binary String Solve ↗ ✓ Mark Find the Longest Substring Containing Vowels in Even Counts completed Find the Longest Substring Containing Vowels in Even Counts Solve ↗ ✓ Mark Find the Maximum Length of Valid Subsequence I completed Find the Maximum Length of Valid Subsequence I Solve ↗ ✓ Mark Find the Maximum Length of Valid Subsequence II completed Find the Maximum Length of Valid Subsequence II Solve ↗ ✓ Mark Find the Middle Index in Array completed Find the Middle Index in Array Solve ↗ ✓ Mark Find the Minimum Amount of Time to Brew Potions completed Find the Minimum Amount of Time to Brew Potions Solve ↗ ✓ Mark Find the Minimum Area to Cover All Ones I completed Find the Minimum Area to Cover All Ones I Solve ↗ ✓ Mark Find the Number of Distinct Colors Among the Balls completed Find the Number of Distinct Colors Among the Balls Solve ↗ ✓ Mark Find the Number of Good Pairs II completed Find the Number of Good Pairs II Solve ↗ ✓ Mark Find the Number of Ways to Place People I completed Find the Number of Ways to Place People I Solve ↗ ✓ Mark Find The Original Array of Prefix Xor completed Find The Original Array of Prefix Xor Solve ↗ ✓ Mark Find the Original Typed String I completed Find the Original Typed String I Solve ↗ ✓ Mark Find the Original Typed String II completed Find the Original Typed String II Solve ↗ ✓ Mark Find the Prefix Common Array of Two Arrays completed Find the Prefix Common Array of Two Arrays Solve ↗ ✓ Mark Find the Punishment Number of an Integer completed Find the Punishment Number of an Integer Solve ↗ ✓ Mark Find the Safest Path in a Grid completed Find the Safest Path in a Grid Solve ↗ ✓ Mark Find the Winner of the Circular Game completed Find the Winner of the Circular Game Solve ↗ ✓ Mark Find Three Consecutive Integers That Sum to a Given Number completed Find Three Consecutive Integers That Sum to a Given Number Solve ↗ ✓ Mark Find Users With Valid E-Mails completed Find Users With Valid E-Mails Solve ↗ ✓ Mark Find Valid Pair of Adjacent Digits in String completed Find Valid Pair of Adjacent Digits in String Solve ↗ ✓ Mark Find Words Containing Character completed Find Words Containing Character Solve ↗ ✓ Mark Find X-Sum of All K-Long Subarrays I completed Find X-Sum of All K-Long Subarrays I Solve ↗ ✓ Mark Finding 3-Digit Even Numbers completed Finding 3-Digit Even Numbers Solve ↗ ✓ Mark Finding MK Average completed Finding MK Average Solve ↗ ✓ Mark Finding Pairs With a Certain Sum completed Finding Pairs With a Certain Sum Solve ↗ ✓ Mark Finding the Users Active Minutes completed Finding the Users Active Minutes Solve ↗ ✓ Mark First and Last Call On the Same Day completed First and Last Call On the Same Day Solve ↗ ✓ Mark First Letter to Appear Twice completed First Letter to Appear Twice Solve ↗ ✓ Mark Fix Names in a Table completed Fix Names in a Table Solve ↗ ✓ Mark Fizz Buzz Multithreaded completed Fizz Buzz Multithreaded Solve ↗ ✓ Mark Flatten 2D Vector completed Flatten 2D Vector Solve ↗ ✓ Mark Flatten Deeply Nested Array completed Flatten Deeply Nested Array Solve ↗ ✓ Mark Flip Columns For Maximum Number of Equal Rows completed Flip Columns For Maximum Number of Equal Rows Solve ↗ ✓ Mark Flip Equivalent Binary Trees completed Flip Equivalent Binary Trees Solve ↗ ✓ Mark Flipping an Image completed Flipping an Image Solve ↗ ✓ Mark Fraction Addition and Subtraction completed Fraction Addition and Subtraction Solve ↗ ✓ Mark Fraction to Recurring Decimal completed Fraction to Recurring Decimal Solve ↗ ✓ Mark Freedom Trail completed Freedom Trail Solve ↗ ✓ Mark Friend Requests II: Who Has the Most Friends completed Friend Requests II: Who Has the Most Friends Solve ↗ ✓ Mark Friends Of Appropriate Ages completed Friends Of Appropriate Ages Solve ↗ ✓ Mark Fruits Into Baskets II completed Fruits Into Baskets II Solve ↗ ✓ Mark Fruits Into Baskets III completed Fruits Into Baskets III Solve ↗ ✓ Mark Function Composition completed Function Composition Solve ↗ ✓ Mark Game Play Analysis I completed Game Play Analysis I Solve ↗ ✓ Mark Game Play Analysis II completed Game Play Analysis II Solve ↗ ✓ Mark Get Maximum in Generated Array completed Get Maximum in Generated Array Solve ↗ ✓ Mark Get the Size of a DataFrame completed Get the Size of a DataFrame Solve ↗ ✓ Mark Graph Valid Tree completed Graph Valid Tree Solve ↗ ✓ Mark Greatest Sum Divisible by Three completed Greatest Sum Divisible by Three Solve ↗ ✓ Mark Grid Game completed Grid Game Solve ↗ ✓ Mark Group Sold Products By The Date completed Group Sold Products By The Date Solve ↗ ✓ Mark Group the People Given the Group Size They Belong To completed Group the People Given the Group Size They Belong To Solve ↗ ✓ Mark H-Index II completed H-Index II Solve ↗ ✓ Mark Hamming Distance completed Hamming Distance Solve ↗ ✓ Mark Hand of Straights completed Hand of Straights Solve ↗ ✓ Mark Height Checker completed Height Checker Solve ↗ ✓ Mark High-Access Employees completed High-Access Employees Solve ↗ ✓ Mark HTML Entity Parser completed HTML Entity Parser Solve ↗ ✓ Mark Human Traffic of Stadium completed Human Traffic of Stadium Solve ↗ ✓ Mark Implement Rand10() Using Rand7() completed Implement Rand10() Using Rand7() Solve ↗ ✓ Mark Increasing Decreasing String completed Increasing Decreasing String Solve ↗ ✓ Mark Increasing Order Search Tree completed Increasing Order Search Tree Solve ↗ ✓ Mark Inorder Successor in BST completed Inorder Successor in BST Solve ↗ ✓ Mark Insert Greatest Common Divisors in Linked List completed Insert Greatest Common Divisors in Linked List Solve ↗ ✓ Mark Insert into a Sorted Circular Linked List completed Insert into a Sorted Circular Linked List Solve ↗ ✓ Mark Insertion Sort List completed Insertion Sort List Solve ↗ ✓ Mark Integer Break completed Integer Break Solve ↗ ✓ Mark Integer Replacement completed Integer Replacement Solve ↗ ✓ Mark Intersection of Multiple Arrays completed Intersection of Multiple Arrays Solve ↗ ✓ Mark Invalid Transactions completed Invalid Transactions Solve ↗ ✓ Mark Investments in 2016 completed Investments in 2016 Solve ↗ ✓ Mark Jump Game III completed Jump Game III Solve ↗ ✓ Mark Jump Game IV completed Jump Game IV Solve ↗ ✓ Mark Jump Game VII completed Jump Game VII Solve ↗ ✓ Mark K Inverse Pairs Array completed K Inverse Pairs Array Solve ↗ ✓ Mark K Radius Subarray Averages completed K Radius Subarray Averages Solve ↗ ✓ Mark K-th Smallest Prime Fraction completed K-th Smallest Prime Fraction Solve ↗ ✓ Mark K-th Symbol in Grammar completed K-th Symbol in Grammar Solve ↗ ✓ Mark Keyboard Row completed Keyboard Row Solve ↗ ✓ Mark Kill Process completed Kill Process Solve ↗ ✓ Mark Knight Dialer completed Knight Dialer Solve ↗ ✓ Mark Kth Ancestor of a Tree Node completed Kth Ancestor of a Tree Node Solve ↗ ✓ Mark Kth Smallest Instructions completed Kth Smallest Instructions Solve ↗ ✓ Mark Kth Smallest Product of Two Sorted Arrays completed Kth Smallest Product of Two Sorted Arrays Solve ↗ ✓ Mark Largest 1-Bordered Square completed Largest 1-Bordered Square Solve ↗ ✓ Mark Largest 3-Same-Digit Number in String completed Largest 3-Same-Digit Number in String Solve ↗ ✓ Mark Largest Combination With Bitwise AND Greater Than Zero completed Largest Combination With Bitwise AND Greater Than Zero Solve ↗ ✓ Mark Largest Element in an Array after Merge Operations completed Largest Element in an Array after Merge Operations Solve ↗ ✓ Mark Largest Local Values in a Matrix completed Largest Local Values in a Matrix Solve ↗ ✓ Mark Largest Perimeter Triangle completed Largest Perimeter Triangle Solve ↗ ✓ Mark Largest Positive Integer That Exists With Its Negative completed Largest Positive Integer That Exists With Its Negative Solve ↗ ✓ Mark Largest Sum of Averages completed Largest Sum of Averages Solve ↗ ✓ Mark Largest Time for Given Digits completed Largest Time for Given Digits Solve ↗ ✓ Mark Largest Triangle Area completed Largest Triangle Area Solve ↗ ✓ Mark Largest Values From Labels completed Largest Values From Labels Solve ↗ ✓ Mark Last Day Where You Can Still Cross completed Last Day Where You Can Still Cross Solve ↗ ✓ Mark Last Stone Weight II completed Last Stone Weight II Solve ↗ ✓ Mark Last Substring in Lexicographical Order completed Last Substring in Lexicographical Order Solve ↗ ✓ Mark Leaf-Similar Trees completed Leaf-Similar Trees Solve ↗ ✓ Mark Least Number of Unique Integers after K Removals completed Least Number of Unique Integers after K Removals Solve ↗ ✓ Mark Leftmost Column with at Least a One completed Leftmost Column with at Least a One Solve ↗ ✓ Mark Length of Longest Fibonacci Subsequence completed Length of Longest Fibonacci Subsequence Solve ↗ ✓ Mark Length of Longest Subarray With at Most K Frequency completed Length of Longest Subarray With at Most K Frequency Solve ↗ ✓ Mark Length of the Longest Alphabetical Continuous Substring completed Length of the Longest Alphabetical Continuous Substring Solve ↗ ✓ Mark Length of the Longest Subsequence That Sums to Target completed Length of the Longest Subsequence That Sums to Target Solve ↗ ✓ Mark Letter Case Permutation completed Letter Case Permutation Solve ↗ ✓ Mark Letter Tile Possibilities completed Letter Tile Possibilities Solve ↗ ✓ Mark Lexicographically Smallest Beautiful String completed Lexicographically Smallest Beautiful String Solve ↗ ✓ Mark Lexicographically Smallest Equivalent String completed Lexicographically Smallest Equivalent String Solve ↗ ✓ Mark Lexicographically Smallest Palindrome completed Lexicographically Smallest Palindrome Solve ↗ ✓ Mark Lexicographically Smallest Permutation Greater Than Target completed Lexicographically Smallest Permutation Greater Than Target Solve ↗ ✓ Mark Lexicographically Smallest String After Applying Operations completed Lexicographically Smallest String After Applying Operations Solve ↗ ✓ Mark Lexicographically Smallest String After Substring Operation completed Lexicographically Smallest String After Substring Operation Solve ↗ ✓ Mark Linked List Components completed Linked List Components Solve ↗ ✓ Mark Linked List in Binary Tree completed Linked List in Binary Tree Solve ↗ ✓ Mark Longest Absolute File Path completed Longest Absolute File Path Solve ↗ ✓ Mark Longest Arithmetic Subsequence completed Longest Arithmetic Subsequence Solve ↗ ✓ Mark Longest Arithmetic Subsequence of Given Difference completed Longest Arithmetic Subsequence of Given Difference Solve ↗ ✓ Mark Longest Binary Subsequence Less Than or Equal to K completed Longest Binary Subsequence Less Than or Equal to K Solve ↗ ✓ Mark Longest Common Prefix Between Adjacent Strings After Removals completed Longest Common Prefix Between Adjacent Strings After Removals Solve ↗ ✓ Mark Longest Continuous Increasing Subsequence completed Longest Continuous Increasing Subsequence Solve ↗ ✓ Mark Longest Cycle in a Graph completed Longest Cycle in a Graph Solve ↗ ✓ Mark Longest Happy Prefix completed Longest Happy Prefix Solve ↗ ✓ Mark Longest Ideal Subsequence completed Longest Ideal Subsequence Solve ↗ ✓ Mark Longest Mountain in Array completed Longest Mountain in Array Solve ↗ ✓ Mark Longest Nice Subarray completed Longest Nice Subarray Solve ↗ ✓ Mark Longest Nice Substring completed Longest Nice Substring Solve ↗ ✓ Mark Longest Non-decreasing Subarray From Two Arrays completed Longest Non-decreasing Subarray From Two Arrays Solve ↗ ✓ Mark Longest Path With Different Adjacent Characters completed Longest Path With Different Adjacent Characters Solve ↗ ✓ Mark Longest Strictly Increasing or Strictly Decreasing Subarray completed Longest Strictly Increasing or Strictly Decreasing Subarray Solve ↗ ✓ Mark Longest String Chain completed Longest String Chain Solve ↗ ✓ Mark Longest Subsequence Repeated k Times completed Longest Subsequence Repeated k Times Solve ↗ ✓ Mark Longest Subsequence With Limited Sum completed Longest Subsequence With Limited Sum Solve ↗ ✓ Mark Longest Substring with At Most Two Distinct Characters completed Longest Substring with At Most Two Distinct Characters Solve ↗ ✓ Mark Longest Turbulent Subarray completed Longest Turbulent Subarray Solve ↗ ✓ Mark Longest Word in Dictionary completed Longest Word in Dictionary Solve ↗ ✓ Mark Longest ZigZag Path in a Binary Tree completed Longest ZigZag Path in a Binary Tree Solve ↗ ✓ Mark Lowest Common Ancestor of Deepest Leaves completed Lowest Common Ancestor of Deepest Leaves Solve ↗ ✓ Mark Lucky Numbers in a Matrix completed Lucky Numbers in a Matrix Solve ↗ ✓ Mark Magic Squares In Grid completed Magic Squares In Grid Solve ↗ ✓ Mark Magical String completed Magical String Solve ↗ ✓ Mark Make Array Elements Equal to Zero completed Make Array Elements Equal to Zero Solve ↗ ✓ Mark Make Lexicographically Smallest Array by Swapping Elements completed Make Lexicographically Smallest Array by Swapping Elements Solve ↗ ✓ Mark Make the Prefix Sum Non-negative completed Make the Prefix Sum Non-negative Solve ↗ ✓ Mark Make The String Great completed Make The String Great Solve ↗ ✓ Mark Make Two Arrays Equal by Reversing Subarrays completed Make Two Arrays Equal by Reversing Subarrays Solve ↗ ✓ Mark Manhattan Distances of All Arrangements of Pieces completed Manhattan Distances of All Arrangements of Pieces Solve ↗ ✓ Mark Map of Highest Peak completed Map of Highest Peak Solve ↗ ✓ Mark Market Analysis I completed Market Analysis I Solve ↗ ✓ Mark Matchsticks to Square completed Matchsticks to Square Solve ↗ ✓ Mark Matrix Diagonal Sum completed Matrix Diagonal Sum Solve ↗ ✓ Mark Max Chunks To Make Sorted II completed Max Chunks To Make Sorted II Solve ↗ ✓ Mark Max Difference You Can Get From Changing an Integer completed Max Difference You Can Get From Changing an Integer Solve ↗ ✓ Mark Max Dot Product of Two Subsequences completed Max Dot Product of Two Subsequences Solve ↗ ✓ Mark Max Pair Sum in an Array completed Max Pair Sum in an Array Solve ↗ ✓ Mark Maximal Score After Applying K Operations completed Maximal Score After Applying K Operations Solve ↗ ✓ Mark Maximize Greatness of an Array completed Maximize Greatness of an Array Solve ↗ ✓ Mark Maximize Score of Numbers in Ranges completed Maximize Score of Numbers in Ranges Solve ↗ ✓ Mark Maximize Subarrays After Removing One Conflicting Pair completed Maximize Subarrays After Removing One Conflicting Pair Solve ↗ ✓ Mark Maximize the Minimum Game Score completed Maximize the Minimum Game Score Solve ↗ ✓ Mark Maximize the Minimum Powered City completed Maximize the Minimum Powered City Solve ↗ ✓ Mark Maximum 69 Number completed Maximum 69 Number Solve ↗ ✓ Mark Maximum Absolute Sum of Any Subarray completed Maximum Absolute Sum of Any Subarray Solve ↗ ✓ Mark Maximum Alternating Subsequence Sum completed Maximum Alternating Subsequence Sum Solve ↗ ✓ Mark Maximum and Minimum Sums of at Most Size K Subsequences completed Maximum and Minimum Sums of at Most Size K Subsequences Solve ↗ ✓ Mark Maximum Ascending Subarray Sum completed Maximum Ascending Subarray Sum Solve ↗ ✓ Mark Maximum Balanced Shipments completed Maximum Balanced Shipments Solve ↗ ✓ Mark Maximum Beauty of an Array After Applying Operation completed Maximum Beauty of an Array After Applying Operation Solve ↗ ✓ Mark Maximum Candies You Can Get from Boxes completed Maximum Candies You Can Get from Boxes Solve ↗ ✓ Mark Maximum Coins From K Consecutive Bags completed Maximum Coins From K Consecutive Bags Solve ↗ ✓ Mark Maximum Depth of N-ary Tree completed Maximum Depth of N-ary Tree Solve ↗ ✓ Mark Maximum Difference Between Adjacent Elements in a Circular Array completed Maximum Difference Between Adjacent Elements in a Circular Array Solve ↗ ✓ Mark Maximum Difference Between Even and Odd Frequency I completed Maximum Difference Between Even and Odd Frequency I Solve ↗ ✓ Mark Maximum Difference Between Even and Odd Frequency II completed Maximum Difference Between Even and Odd Frequency II Solve ↗ ✓ Mark Maximum Difference Between Increasing Elements completed Maximum Difference Between Increasing Elements Solve ↗ ✓ Mark Maximum Difference by Remapping a Digit completed Maximum Difference by Remapping a Digit Solve ↗ ✓ Mark Maximum Distance in Arrays completed Maximum Distance in Arrays Solve ↗ ✓ Mark Maximum Employees to Be Invited to a Meeting completed Maximum Employees to Be Invited to a Meeting Solve ↗ ✓ Mark Maximum Frequency of an Element After Performing Operations I completed Maximum Frequency of an Element After Performing Operations I Solve ↗ ✓ Mark Maximum Frequency of an Element After Performing Operations II completed Maximum Frequency of an Element After Performing Operations II Solve ↗ ✓ Mark Maximum Fruits Harvested After at Most K Steps completed Maximum Fruits Harvested After at Most K Steps Solve ↗ ✓ Mark Maximum Gap completed Maximum Gap Solve ↗ ✓ Mark Maximum Good Subarray Sum completed Maximum Good Subarray Sum Solve ↗ ✓ Mark Maximum Height by Stacking Cuboids completed Maximum Height by Stacking Cuboids Solve ↗ ✓ Mark Maximum Ice Cream Bars completed Maximum Ice Cream Bars Solve ↗ ✓ Mark Maximum Length of a Concatenated String with Unique Characters completed Maximum Length of a Concatenated String with Unique Characters Solve ↗ ✓ Mark Maximum Length of Repeated Subarray completed Maximum Length of Repeated Subarray Solve ↗ ✓ Mark Maximum Length of Subarray With Positive Product completed Maximum Length of Subarray With Positive Product Solve ↗ ✓ Mark Maximum Level Sum of a Binary Tree completed Maximum Level Sum of a Binary Tree Solve ↗ ✓ Mark Maximum Matrix Sum completed Maximum Matrix Sum Solve ↗ ✓ Mark Maximum Nesting Depth of Two Valid Parentheses Strings completed Maximum Nesting Depth of Two Valid Parentheses Strings Solve ↗ ✓ Mark Maximum Non Negative Product in a Matrix completed Maximum Non Negative Product in a Matrix Solve ↗ ✓ Mark Maximum Number of Balloons completed Maximum Number of Balloons Solve ↗ ✓ Mark Maximum Number of Coins You Can Get completed Maximum Number of Coins You Can Get Solve ↗ ✓ Mark Maximum Number of Consecutive Values You Can Make completed Maximum Number of Consecutive Values You Can Make Solve ↗ ✓ Mark Maximum Number of Distinct Elements After Operations completed Maximum Number of Distinct Elements After Operations Solve ↗ ✓ Mark Maximum Number of Events That Can Be Attended II completed Maximum Number of Events That Can Be Attended II Solve ↗ ✓ Mark Maximum Number of Fish in a Grid completed Maximum Number of Fish in a Grid Solve ↗ ✓ Mark Maximum Number of Integers to Choose From a Range I completed Maximum Number of Integers to Choose From a Range I Solve ↗ ✓ Mark Maximum Number of K-Divisible Components completed Maximum Number of K-Divisible Components Solve ↗ ✓ Mark Maximum Number of Moves in a Grid completed Maximum Number of Moves in a Grid Solve ↗ ✓ Mark Maximum Number of Occurrences of a Substring completed Maximum Number of Occurrences of a Substring Solve ↗ ✓ Mark Maximum Number of Operations to Move Ones to the End completed Maximum Number of Operations to Move Ones to the End Solve ↗ ✓ Mark Maximum Number of Points with Cost completed Maximum Number of Points with Cost Solve ↗ ✓ Mark Maximum Number of Removable Characters completed Maximum Number of Removable Characters Solve ↗ ✓ Mark Maximum Number of Tasks You Can Assign completed Maximum Number of Tasks You Can Assign Solve ↗ ✓ Mark Maximum Number of Visible Points completed Maximum Number of Visible Points Solve ↗ ✓ Mark Maximum Number of Words Found in Sentences completed Maximum Number of Words Found in Sentences Solve ↗ ✓ Mark Maximum Number of Words You Can Type completed Maximum Number of Words You Can Type Solve ↗ ✓ Mark Maximum Odd Binary Number completed Maximum Odd Binary Number Solve ↗ ✓ Mark Maximum of Absolute Value Expression completed Maximum of Absolute Value Expression Solve ↗ ✓ Mark Maximum Path Quality of a Graph completed Maximum Path Quality of a Graph Solve ↗ ✓ Mark Maximum Performance of a Team completed Maximum Performance of a Team Solve ↗ ✓ Mark Maximum Population Year completed Maximum Population Year Solve ↗ ✓ Mark Maximum Possible Number by Binary Concatenation completed Maximum Possible Number by Binary Concatenation Solve ↗ ✓ Mark Maximum Product Difference Between Two Pairs completed Maximum Product Difference Between Two Pairs Solve ↗ ✓ Mark Maximum Product of Splitted Binary Tree completed Maximum Product of Splitted Binary Tree Solve ↗ ✓ Mark Maximum Product of Three Numbers completed Maximum Product of Three Numbers Solve ↗ ✓ Mark Maximum Product of Two Elements in an Array completed Maximum Product of Two Elements in an Array Solve ↗ ✓ Mark Maximum Product of Word Lengths completed Maximum Product of Word Lengths Solve ↗ ✓ Mark Maximum Profit From Trading Stocks completed Maximum Profit From Trading Stocks Solve ↗ ✓ Mark Maximum Repeating Substring completed Maximum Repeating Substring Solve ↗ ✓ Mark Maximum Score After Splitting a String completed Maximum Score After Splitting a String Solve ↗ ✓ Mark Maximum Score From Removing Substrings completed Maximum Score From Removing Substrings Solve ↗ ✓ Mark Maximum Score of Non-overlapping Intervals completed Maximum Score of Non-overlapping Intervals Solve ↗ ✓ Mark Maximum Side Length of a Square with Sum Less than or Equal to Threshold completed Maximum Side Length of a Square with Sum Less than or Equal to Threshold Solve ↗ ✓ Mark Maximum Size of a Set After Removals completed Maximum Size of a Set After Removals Solve ↗ ✓ Mark Maximum Size Subarray Sum Equals k completed Maximum Size Subarray Sum Equals k Solve ↗ ✓ Mark Maximum Strength of K Disjoint Subarrays completed Maximum Strength of K Disjoint Subarrays Solve ↗ ✓ Mark Maximum Strong Pair XOR I completed Maximum Strong Pair XOR I Solve ↗ ✓ Mark Maximum Subarray Min-Product completed Maximum Subarray Min-Product Solve ↗ ✓ Mark Maximum Subsequence Score completed Maximum Subsequence Score Solve ↗ ✓ Mark Maximum Sum of 3 Non-Overlapping Subarrays completed Maximum Sum of 3 Non-Overlapping Subarrays Solve ↗ ✓ Mark Maximum Sum of Two Non-Overlapping Subarrays completed Maximum Sum of Two Non-Overlapping Subarrays Solve ↗ ✓ Mark Maximum Sum With Exactly K Elements completed Maximum Sum With Exactly K Elements Solve ↗ ✓ Mark Maximum Tastiness of Candy Basket completed Maximum Tastiness of Candy Basket Solve ↗ ✓ Mark Maximum Total Damage With Spell Casting completed Maximum Total Damage With Spell Casting Solve ↗ ✓ Mark Maximum Total Importance of Roads completed Maximum Total Importance of Roads Solve ↗ ✓ Mark Maximum Unique Subarray Sum After Deletion completed Maximum Unique Subarray Sum After Deletion Solve ↗ ✓ Mark Maximum Value after Insertion completed Maximum Value after Insertion Solve ↗ ✓ Mark Maximum Value at a Given Index in a Bounded Array completed Maximum Value at a Given Index in a Bounded Array Solve ↗ ✓ Mark Maximum Value of an Ordered Triplet I completed Maximum Value of an Ordered Triplet I Solve ↗ ✓ Mark Maximum Value of an Ordered Triplet II completed Maximum Value of an Ordered Triplet II Solve ↗ ✓ Mark Maximum XOR After Operations completed Maximum XOR After Operations Solve ↗ ✓ Mark Maximum XOR for Each Query completed Maximum XOR for Each Query Solve ↗ ✓ Mark Maximum XOR of Two Numbers in an Array completed Maximum XOR of Two Numbers in an Array Solve ↗ ✓ Mark Meeting Scheduler completed Meeting Scheduler Solve ↗ ✓ Mark Memoize completed Memoize Solve ↗ ✓ Mark Merge In Between Linked Lists completed Merge In Between Linked Lists Solve ↗ ✓ Mark Merge Nodes in Between Zeros completed Merge Nodes in Between Zeros Solve ↗ ✓ Mark Merge Two 2D Arrays by Summing Values completed Merge Two 2D Arrays by Summing Values Solve ↗ ✓ Mark Mini Parser completed Mini Parser Solve ↗ ✓ Mark Minimize Malware Spread completed Minimize Malware Spread Solve ↗ ✓ Mark Minimize Manhattan Distances completed Minimize Manhattan Distances Solve ↗ ✓ Mark Minimize Max Distance to Gas Station completed Minimize Max Distance to Gas Station Solve ↗ ✓ Mark Minimize Maximum of Array completed Minimize Maximum of Array Solve ↗ ✓ Mark Minimize Maximum Pair Sum in Array completed Minimize Maximum Pair Sum in Array Solve ↗ ✓ Mark Minimize the Maximum Adjacent Element Difference completed Minimize the Maximum Adjacent Element Difference Solve ↗ ✓ Mark Minimize the Maximum Difference of Pairs completed Minimize the Maximum Difference of Pairs Solve ↗ ✓ Mark Minimize the Maximum of Two Arrays completed Minimize the Maximum of Two Arrays Solve ↗ ✓ Mark Minimize XOR completed Minimize XOR Solve ↗ ✓ Mark Minimum Absolute Difference completed Minimum Absolute Difference Solve ↗ ✓ Mark Minimum Absolute Difference Between Elements With Constraint completed Minimum Absolute Difference Between Elements With Constraint Solve ↗ ✓ Mark Minimum Additions to Make Valid String completed Minimum Additions to Make Valid String Solve ↗ ✓ Mark Minimum Amount of Damage Dealt to Bob completed Minimum Amount of Damage Dealt to Bob Solve ↗ ✓ Mark Minimum Amount of Time to Collect Garbage completed Minimum Amount of Time to Collect Garbage Solve ↗ ✓ Mark Minimum Array End completed Minimum Array End Solve ↗ ✓ Mark Minimum ASCII Delete Sum for Two Strings completed Minimum ASCII Delete Sum for Two Strings Solve ↗ ✓ Mark Minimum Bit Flips to Convert Number completed Minimum Bit Flips to Convert Number Solve ↗ ✓ Mark Minimum Common Value completed Minimum Common Value Solve ↗ ✓ Mark Minimum Consecutive Cards to Pick Up completed Minimum Consecutive Cards to Pick Up Solve ↗ ✓ Mark Minimum Cost of Buying Candies With Discount completed Minimum Cost of Buying Candies With Discount Solve ↗ ✓ Mark Minimum Cost to Convert String I completed Minimum Cost to Convert String I Solve ↗ ✓ Mark Minimum Cost to Convert String II completed Minimum Cost to Convert String II Solve ↗ ✓ Mark Minimum Cost to Equalize Array completed Minimum Cost to Equalize Array Solve ↗ ✓ Mark Minimum Cost to Make Arrays Identical completed Minimum Cost to Make Arrays Identical Solve ↗ ✓ Mark Minimum Cost to Make at Least One Valid Path in a Grid completed Minimum Cost to Make at Least One Valid Path in a Grid Solve ↗ ✓ Mark Minimum Cost to Move Chips to The Same Position completed Minimum Cost to Move Chips to The Same Position Solve ↗ ✓ Mark Minimum Cost to Reach Destination in Time completed Minimum Cost to Reach Destination in Time Solve ↗ ✓ Mark Minimum Cost Walk in Weighted Graph completed Minimum Cost Walk in Weighted Graph Solve ↗ ✓ Mark Minimum Cuts to Divide a Circle completed Minimum Cuts to Divide a Circle Solve ↗ ✓ Mark Minimum Deletions to Make Character Frequencies Unique completed Minimum Deletions to Make Character Frequencies Unique Solve ↗ ✓ Mark Minimum Deletions to Make String Balanced completed Minimum Deletions to Make String Balanced Solve ↗ ✓ Mark Minimum Depth of Binary Tree completed Minimum Depth of Binary Tree Solve ↗ ✓ Mark Minimum Difference Between Highest and Lowest of K Scores completed Minimum Difference Between Highest and Lowest of K Scores Solve ↗ ✓ Mark Minimum Distance Between BST Nodes completed Minimum Distance Between BST Nodes Solve ↗ ✓ Mark Minimum Distance to the Target Element completed Minimum Distance to the Target Element Solve ↗ ✓ Mark Minimum Division Operations to Make Array Non Decreasing completed Minimum Division Operations to Make Array Non Decreasing Solve ↗ ✓ Mark Minimum Domino Rotations For Equal Row completed Minimum Domino Rotations For Equal Row Solve ↗ ✓ Mark Minimum Equal Sum of Two Arrays After Replacing Zeros completed Minimum Equal Sum of Two Arrays After Replacing Zeros Solve ↗ ✓ Mark Minimum Falling Path Sum II completed Minimum Falling Path Sum II Solve ↗ ✓ Mark Minimum Fuel Cost to Report to the Capital completed Minimum Fuel Cost to Report to the Capital Solve ↗ ✓ Mark Minimum Hours of Training to Win a Competition completed Minimum Hours of Training to Win a Competition Solve ↗ ✓ Mark Minimum Index of a Valid Split completed Minimum Index of a Valid Split Solve ↗ ✓ Mark Minimum Index Sum of Two Lists completed Minimum Index Sum of Two Lists Solve ↗ ✓ Mark Minimum Insertion Steps to Make a String Palindrome completed Minimum Insertion Steps to Make a String Palindrome Solve ↗ ✓ Mark Minimum Insertions to Balance a Parentheses String completed Minimum Insertions to Balance a Parentheses String Solve ↗ ✓ Mark Minimum Interval to Include Each Query completed Minimum Interval to Include Each Query Solve ↗ ✓ Mark Minimum Jumps to Reach Home completed Minimum Jumps to Reach Home Solve ↗ ✓ Mark Minimum Length of String After Operations completed Minimum Length of String After Operations Solve ↗ ✓ Mark Minimum Limit of Balls in a Bag completed Minimum Limit of Balls in a Bag Solve ↗ ✓ Mark Minimum Moves to Equal Array Elements completed Minimum Moves to Equal Array Elements Solve ↗ ✓ Mark Minimum Moves to Equal Array Elements II completed Minimum Moves to Equal Array Elements II Solve ↗ ✓ Mark Minimum Moves to Reach Target Score completed Minimum Moves to Reach Target Score Solve ↗ ✓ Mark Minimum Moves to Spread Stones Over Grid completed Minimum Moves to Spread Stones Over Grid Solve ↗ ✓ Mark Minimum Non-Zero Product of the Array Elements completed Minimum Non-Zero Product of the Array Elements Solve ↗ ✓ Mark Minimum Number Game completed Minimum Number Game Solve ↗ ✓ Mark Minimum Number of Chairs in a Waiting Room completed Minimum Number of Chairs in a Waiting Room Solve ↗ ✓ Mark Minimum Number of Days to Disconnect Island completed Minimum Number of Days to Disconnect Island Solve ↗ ✓ Mark Minimum Number of Groups to Create a Valid Assignment completed Minimum Number of Groups to Create a Valid Assignment Solve ↗ ✓ Mark Minimum Number of Increments on Subarrays to Form a Target Array completed Minimum Number of Increments on Subarrays to Form a Target Array Solve ↗ ✓ Mark Minimum Number of K Consecutive Bit Flips completed Minimum Number of K Consecutive Bit Flips Solve ↗ ✓ Mark Minimum Number of Operations to Make All Array Elements Equal to 1 completed Minimum Number of Operations to Make All Array Elements Equal to 1 Solve ↗ ✓ Mark Minimum Number of Operations to Make Array XOR Equal to K completed Minimum Number of Operations to Make Array XOR Equal to K Solve ↗ ✓ Mark Minimum Number of Operations to Make Arrays Similar completed Minimum Number of Operations to Make Arrays Similar Solve ↗ ✓ Mark Minimum Number of People to Teach completed Minimum Number of People to Teach Solve ↗ ✓ Mark Minimum Number of Removals to Make Mountain Array completed Minimum Number of Removals to Make Mountain Array Solve ↗ ✓ Mark Minimum Number of Swaps to Make the Binary String Alternating completed Minimum Number of Swaps to Make the Binary String Alternating Solve ↗ ✓ Mark Minimum Number of Taps to Open to Water a Garden completed Minimum Number of Taps to Open to Water a Garden Solve ↗ ✓ Mark Minimum Number of Vertices to Reach All Nodes completed Minimum Number of Vertices to Reach All Nodes Solve ↗ ✓ Mark Minimum Number of Work Sessions to Finish the Tasks completed Minimum Number of Work Sessions to Finish the Tasks Solve ↗ ✓ Mark Minimum Obstacle Removal to Reach Corner completed Minimum Obstacle Removal to Reach Corner Solve ↗ ✓ Mark Minimum Operations to Convert All Elements to Zero completed Minimum Operations to Convert All Elements to Zero Solve ↗ ✓ Mark Minimum Operations to Equalize Binary String completed Minimum Operations to Equalize Binary String Solve ↗ ✓ Mark Minimum Operations to Exceed Threshold Value II completed Minimum Operations to Exceed Threshold Value II Solve ↗ ✓ Mark Minimum Operations to Make a Subsequence completed Minimum Operations to Make a Subsequence Solve ↗ ✓ Mark Minimum Operations to Make All Array Elements Equal completed Minimum Operations to Make All Array Elements Equal Solve ↗ ✓ Mark Minimum Operations to Make Array Equal to Target completed Minimum Operations to Make Array Equal to Target Solve ↗ ✓ Mark Minimum Operations to Make Binary Array Elements Equal to One I completed Minimum Operations to Make Binary Array Elements Equal to One I Solve ↗ ✓ Mark Minimum Operations to Make the Array Increasing completed Minimum Operations to Make the Array Increasing Solve ↗ ✓ Mark Minimum Operations to Make the Integer Zero completed Minimum Operations to Make the Integer Zero Solve ↗ ✓ Mark Minimum Operations to Reduce an Integer to 0 completed Minimum Operations to Reduce an Integer to 0 Solve ↗ ✓ Mark Minimum Operations to Reduce X to Zero completed Minimum Operations to Reduce X to Zero Solve ↗ ✓ Mark Minimum Operations to Write the Letter Y on a Grid completed Minimum Operations to Write the Letter Y on a Grid Solve ↗ ✓ Mark Minimum Pair Removal to Sort Array I completed Minimum Pair Removal to Sort Array I Solve ↗ ✓ Mark Minimum Positive Sum Subarray completed Minimum Positive Sum Subarray Solve ↗ ✓ Mark Minimum Recolors to Get K Consecutive Black Blocks completed Minimum Recolors to Get K Consecutive Black Blocks Solve ↗ ✓ Mark Minimum Replacements to Sort the Array completed Minimum Replacements to Sort the Array Solve ↗ ✓ Mark Minimum Score of a Path Between Two Cities completed Minimum Score of a Path Between Two Cities Solve ↗ ✓ Mark Minimum Score Triangulation of Polygon completed Minimum Score Triangulation of Polygon Solve ↗ ✓ Mark Minimum Speed to Arrive on Time completed Minimum Speed to Arrive on Time Solve ↗ ✓ Mark Minimum String Length After Removing Substrings completed Minimum String Length After Removing Substrings Solve ↗ ✓ Mark Minimum Subsequence in Non-Increasing Order completed Minimum Subsequence in Non-Increasing Order Solve ↗ ✓ Mark Minimum Substring Partition of Equal Character Frequency completed Minimum Substring Partition of Equal Character Frequency Solve ↗ ✓ Mark Minimum Suffix Flips completed Minimum Suffix Flips Solve ↗ ✓ Mark Minimum Time to Collect All Apples in a Tree completed Minimum Time to Collect All Apples in a Tree Solve ↗ ✓ Mark Minimum Time to Complete Trips completed Minimum Time to Complete Trips Solve ↗ ✓ Mark Minimum Time to Make Rope Colorful completed Minimum Time to Make Rope Colorful Solve ↗ ✓ Mark Minimum Time to Repair Cars completed Minimum Time to Repair Cars Solve ↗ ✓ Mark Minimum Time to Visit a Cell In a Grid completed Minimum Time to Visit a Cell In a Grid Solve ↗ ✓ Mark Minimum Time Visiting All Points completed Minimum Time Visiting All Points Solve ↗ ✓ Mark Minimum Unique Word Abbreviation completed Minimum Unique Word Abbreviation Solve ↗ ✓ Mark Mirror Reflection completed Mirror Reflection Solve ↗ ✓ Mark Modify Columns completed Modify Columns Solve ↗ ✓ Mark Monotonic Array completed Monotonic Array Solve ↗ ✓ Mark Most Beautiful Item for Each Query completed Most Beautiful Item for Each Query Solve ↗ ✓ Mark Most Frequent Even Element completed Most Frequent Even Element Solve ↗ ✓ Mark Most Profitable Path in a Tree completed Most Profitable Path in a Tree Solve ↗ ✓ Mark Movie Rating completed Movie Rating Solve ↗ ✓ Mark My Calendar II completed My Calendar II Solve ↗ ✓ Mark My Calendar III completed My Calendar III Solve ↗ ✓ Mark N-ary Tree Level Order Traversal completed N-ary Tree Level Order Traversal Solve ↗ ✓ Mark N-ary Tree Postorder Traversal completed N-ary Tree Postorder Traversal Solve ↗ ✓ Mark N-ary Tree Preorder Traversal completed N-ary Tree Preorder Traversal Solve ↗ ✓ Mark Neighboring Bitwise XOR completed Neighboring Bitwise XOR Solve ↗ ✓ Mark Nested List Weight Sum II completed Nested List Weight Sum II Solve ↗ ✓ Mark Next Greater Node In Linked List completed Next Greater Node In Linked List Solve ↗ ✓ Mark Nim Game completed Nim Game Solve ↗ ✓ Mark Non-decreasing Subsequences completed Non-decreasing Subsequences Solve ↗ ✓ Mark Not Boring Movies completed Not Boring Movies Solve ↗ ✓ Mark Nth Digit completed Nth Digit Solve ↗ ✓ Mark Nth Magical Number completed Nth Magical Number Solve ↗ ✓ Mark Number of Adjacent Elements With the Same Color completed Number of Adjacent Elements With the Same Color Solve ↗ ✓ Mark Number of Changing Keys completed Number of Changing Keys Solve ↗ ✓ Mark Number of Closed Islands completed Number of Closed Islands Solve ↗ ✓ Mark Number of Common Factors completed Number of Common Factors Solve ↗ ✓ Mark Number of Days Between Two Dates completed Number of Days Between Two Dates Solve ↗ ✓ Mark Number of Employees Who Met the Target completed Number of Employees Who Met the Target Solve ↗ ✓ Mark Number of Enclaves completed Number of Enclaves Solve ↗ ✓ Mark Number of Even and Odd Bits completed Number of Even and Odd Bits Solve ↗ ✓ Mark Number of Flowers in Full Bloom completed Number of Flowers in Full Bloom Solve ↗ ✓ Mark Number of Good Paths completed Number of Good Paths Solve ↗ ✓ Mark Number of Good Ways to Split a String completed Number of Good Ways to Split a String Solve ↗ ✓ Mark Number of Islands II completed Number of Islands II Solve ↗ ✓ Mark Number of Longest Increasing Subsequence completed Number of Longest Increasing Subsequence Solve ↗ ✓ Mark Number of Matching Subsequences completed Number of Matching Subsequences Solve ↗ ✓ Mark Number of Pairs of Interchangeable Rectangles completed Number of Pairs of Interchangeable Rectangles Solve ↗ ✓ Mark Number of Pairs Satisfying Inequality completed Number of Pairs Satisfying Inequality Solve ↗ ✓ Mark Number of Paths with Max Score completed Number of Paths with Max Score Solve ↗ ✓ Mark Number of People Aware of a Secret completed Number of People Aware of a Secret Solve ↗ ✓ Mark Number of Segments in a String completed Number of Segments in a String Solve ↗ ✓ Mark Number of Steps to Reduce a Number to Zero completed Number of Steps to Reduce a Number to Zero Solve ↗ ✓ Mark Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold completed Number of Sub-arrays of Size K and Average Greater than or Equal to Threshold Solve ↗ ✓ Mark Number of Sub-arrays With Odd Sum completed Number of Sub-arrays With Odd Sum Solve ↗ ✓ Mark Number of Subarrays That Match a Pattern I completed Number of Subarrays That Match a Pattern I Solve ↗ ✓ Mark Number of Subarrays with Bounded Maximum completed Number of Subarrays with Bounded Maximum Solve ↗ ✓ Mark Number of Subarrays With GCD Equal to K completed Number of Subarrays With GCD Equal to K Solve ↗ ✓ Mark Number of Subarrays With LCM Equal to K completed Number of Subarrays With LCM Equal to K Solve ↗ ✓ Mark Number of Unique Subjects Taught by Each Teacher completed Number of Unique Subjects Taught by Each Teacher Solve ↗ ✓ Mark Number of Valid Subarrays completed Number of Valid Subarrays Solve ↗ ✓ Mark Number of Ways to Form a Target String Given a Dictionary completed Number of Ways to Form a Target String Given a Dictionary Solve ↗ ✓ Mark Number of Wonderful Substrings completed Number of Wonderful Substrings Solve ↗ ✓ Mark Numbers With Same Consecutive Differences completed Numbers With Same Consecutive Differences Solve ↗ ✓ Mark Odd Even Jump completed Odd Even Jump Solve ↗ ✓ Mark Out of Boundary Paths completed Out of Boundary Paths Solve ↗ ✓ Mark Paint House IV completed Paint House IV Solve ↗ ✓ Mark Painting a Grid With Three Different Colors completed Painting a Grid With Three Different Colors Solve ↗ ✓ Mark Painting the Walls completed Painting the Walls Solve ↗ ✓ Mark Palindrome Pairs completed Palindrome Pairs Solve ↗ ✓ Mark Pancake Sorting completed Pancake Sorting Solve ↗ ✓ Mark Parallel Courses completed Parallel Courses Solve ↗ ✓ Mark Parallel Courses III completed Parallel Courses III Solve ↗ ✓ Mark Parse Lisp Expression completed Parse Lisp Expression Solve ↗ ✓ Mark Partitioning Into Minimum Number Of Deci-Binary Numbers completed Partitioning Into Minimum Number Of Deci-Binary Numbers Solve ↗ ✓ Mark Pass the Pillow completed Pass the Pillow Solve ↗ ✓ Mark Patching Array completed Patching Array Solve ↗ ✓ Mark Path with Maximum Probability completed Path with Maximum Probability Solve ↗ ✓ Mark Patients With a Condition completed Patients With a Condition Solve ↗ ✓ Mark Perfect Number completed Perfect Number Solve ↗ ✓ Mark Pizza Toppings Cost Analysis completed Pizza Toppings Cost Analysis Solve ↗ ✓ Mark Pizza With 3n Slices completed Pizza With 3n Slices Solve ↗ ✓ Mark Plus One Linked List completed Plus One Linked List Solve ↗ ✓ Mark Possible Bipartition completed Possible Bipartition Solve ↗ ✓ Mark Power Grid Maintenance completed Power Grid Maintenance Solve ↗ ✓ Mark Primary Department for Each Employee completed Primary Department for Each Employee Solve ↗ ✓ Mark Prime Palindrome completed Prime Palindrome Solve ↗ ✓ Mark Prime Subtraction Operation completed Prime Subtraction Operation Solve ↗ ✓ Mark Print Binary Tree completed Print Binary Tree Solve ↗ ✓ Mark Process Tasks Using Servers completed Process Tasks Using Servers Solve ↗ ✓ Mark Product of the Last K Numbers completed Product of the Last K Numbers Solve ↗ ✓ Mark Profitable Schemes completed Profitable Schemes Solve ↗ ✓ Mark Project Employees I completed Project Employees I Solve ↗ ✓ Mark Push Dominoes completed Push Dominoes Solve ↗ ✓ Mark Queue Reconstruction by Height completed Queue Reconstruction by Height Solve ↗ ✓ Mark Race Car completed Race Car Solve ↗ ✓ Mark Random Pick Index completed Random Pick Index Solve ↗ ✓ Mark Random Pick with Blacklist completed Random Pick with Blacklist Solve ↗ ✓ Mark Range Addition completed Range Addition Solve ↗ ✓ Mark Range Module completed Range Module Solve ↗ ✓ Mark Range Product Queries of Powers completed Range Product Queries of Powers Solve ↗ ✓ Mark Range Sum of Sorted Subarray Sums completed Range Sum of Sorted Subarray Sums Solve ↗ ✓ Mark Range Sum Query 2D - Mutable completed Range Sum Query 2D - Mutable Solve ↗ ✓ Mark Rank Teams by Votes completed Rank Teams by Votes Solve ↗ ✓ Mark Rank Transform of an Array completed Rank Transform of an Array Solve ↗ ✓ Mark Reach a Number completed Reach a Number Solve ↗ ✓ Mark Reaching Points completed Reaching Points Solve ↗ ✓ Mark Read N Characters Given Read4 completed Read N Characters Given Read4 Solve ↗ ✓ Mark Rearrange Array to Maximize Prefix Score completed Rearrange Array to Maximize Prefix Score Solve ↗ ✓ Mark Rearrange String k Distance Apart completed Rearrange String k Distance Apart Solve ↗ ✓ Mark Rearranging Fruits completed Rearranging Fruits Solve ↗ ✓ Mark Rectangle Area completed Rectangle Area Solve ↗ ✓ Mark Rectangle Overlap completed Rectangle Overlap Solve ↗ ✓ Mark Redistribute Characters to Make All Strings Equal completed Redistribute Characters to Make All Strings Equal Solve ↗ ✓ Mark Reducing Dishes completed Reducing Dishes Solve ↗ ✓ Mark Relative Ranks completed Relative Ranks Solve ↗ ✓ Mark Remove Boxes completed Remove Boxes Solve ↗ ✓ Mark Remove Digit From Number to Maximize Result completed Remove Digit From Number to Maximize Result Solve ↗ ✓ Mark Remove Duplicates From an Unsorted Linked List completed Remove Duplicates From an Unsorted Linked List Solve ↗ ✓ Mark Remove Invalid Parentheses completed Remove Invalid Parentheses Solve ↗ ✓ Mark Remove One Element to Make the Array Strictly Increasing completed Remove One Element to Make the Array Strictly Increasing Solve ↗ ✓ Mark Remove Stones to Minimize the Total completed Remove Stones to Minimize the Total Solve ↗ ✓ Mark Remove Zero Sum Consecutive Nodes from Linked List completed Remove Zero Sum Consecutive Nodes from Linked List Solve ↗ ✓ Mark Removing Minimum and Maximum From Array completed Removing Minimum and Maximum From Array Solve ↗ ✓ Mark Repeated String Match completed Repeated String Match Solve ↗ ✓ Mark Replace the Substring for Balanced String completed Replace the Substring for Balanced String Solve ↗ ✓ Mark Replace Words completed Replace Words Solve ↗ ✓ Mark Report Contiguous Dates completed Report Contiguous Dates Solve ↗ ✓ Mark Reschedule Meetings for Maximum Free Time I completed Reschedule Meetings for Maximum Free Time I Solve ↗ ✓ Mark Reschedule Meetings for Maximum Free Time II completed Reschedule Meetings for Maximum Free Time II Solve ↗ ✓ Mark Reshape Data: Concatenate completed Reshape Data: Concatenate Solve ↗ ✓ Mark Reshape Data: Melt completed Reshape Data: Melt Solve ↗ ✓ Mark Reshape Data: Pivot completed Reshape Data: Pivot Solve ↗ ✓ Mark Reshape the Matrix completed Reshape the Matrix Solve ↗ ✓ Mark Return Length of Arguments Passed completed Return Length of Arguments Passed Solve ↗ ✓ Mark Reverse Nodes in Even Length Groups completed Reverse Nodes in Even Length Groups Solve ↗ ✓ Mark Reverse Odd Levels of Binary Tree completed Reverse Odd Levels of Binary Tree Solve ↗ ✓ Mark Reverse Only Letters completed Reverse Only Letters Solve ↗ ✓ Mark Reverse Prefix of Word completed Reverse Prefix of Word Solve ↗ ✓ Mark Reverse String II completed Reverse String II Solve ↗ ✓ Mark Reverse Substrings Between Each Pair of Parentheses completed Reverse Substrings Between Each Pair of Parentheses Solve ↗ ✓ Mark Reverse Words in a String III completed Reverse Words in a String III Solve ↗ ✓ Mark Richest Customer Wealth completed Richest Customer Wealth Solve ↗ ✓ Mark Robot Collisions completed Robot Collisions Solve ↗ ✓ Mark Robot Return to Origin completed Robot Return to Origin Solve ↗ ✓ Mark Robot Room Cleaner completed Robot Room Cleaner Solve ↗ ✓ Mark Root Equals Sum of Children completed Root Equals Sum of Children Solve ↗ ✓ Mark Rotated Digits completed Rotated Digits Solve ↗ ✓ Mark Rotating the Box completed Rotating the Box Solve ↗ ✓ Mark Sales Person completed Sales Person Solve ↗ ✓ Mark Score After Flipping Matrix completed Score After Flipping Matrix Solve ↗ ✓ Mark Scramble String completed Scramble String Solve ↗ ✓ Mark Search in a Binary Search Tree completed Search in a Binary Search Tree Solve ↗ ✓ Mark Second Minimum Time to Reach Destination completed Second Minimum Time to Reach Destination Solve ↗ ✓ Mark Select K Disjoint Special Substrings completed Select K Disjoint Special Substrings Solve ↗ ✓ Mark Self Dividing Numbers completed Self Dividing Numbers Solve ↗ ✓ Mark Sell Diminishing-Valued Colored Balls completed Sell Diminishing-Valued Colored Balls Solve ↗ ✓ Mark Sentence Similarity II completed Sentence Similarity II Solve ↗ ✓ Mark Sentence Similarity III completed Sentence Similarity III Solve ↗ ✓ Mark Separate Black and White Balls completed Separate Black and White Balls Solve ↗ ✓ Mark Separate Squares I completed Separate Squares I Solve ↗ ✓ Mark Separate Squares II completed Separate Squares II Solve ↗ ✓ Mark Sequence Reconstruction completed Sequence Reconstruction Solve ↗ ✓ Mark Sequential Digits completed Sequential Digits Solve ↗ ✓ Mark Shifting Letters II completed Shifting Letters II Solve ↗ ✓ Mark Shopping Offers completed Shopping Offers Solve ↗ ✓ Mark Shortest Distance to a Character completed Shortest Distance to a Character Solve ↗ ✓ Mark Shortest Path Visiting All Nodes completed Shortest Path Visiting All Nodes Solve ↗ ✓ Mark Shortest Subarray With OR at Least K II completed Shortest Subarray With OR at Least K II Solve ↗ ✓ Mark Shortest Uncommon Substring in an Array completed Shortest Uncommon Substring in an Array Solve ↗ ✓ Mark Shortest Word Distance completed Shortest Word Distance Solve ↗ ✓ Mark Shuffle an Array completed Shuffle an Array Solve ↗ ✓ Mark Shuffle String completed Shuffle String Solve ↗ ✓ Mark Similar String Groups completed Similar String Groups Solve ↗ ✓ Mark Simple Bank System completed Simple Bank System Solve ↗ ✓ Mark Single Number III completed Single Number III Solve ↗ ✓ Mark Single-Threaded CPU completed Single-Threaded CPU Solve ↗ ✓ Mark Sleep completed Sleep Solve ↗ ✓ Mark Sliding Puzzle completed Sliding Puzzle Solve ↗ ✓ Mark Sliding Subarray Beauty completed Sliding Subarray Beauty Solve ↗ ✓ Mark Smallest Even Multiple completed Smallest Even Multiple Solve ↗ ✓ Mark Smallest Missing Non-negative Integer After Operations completed Smallest Missing Non-negative Integer After Operations Solve ↗ ✓ Mark Smallest Number With All Set Bits completed Smallest Number With All Set Bits Solve ↗ ✓ Mark Smallest Palindromic Rearrangement I completed Smallest Palindromic Rearrangement I Solve ↗ ✓ Mark Smallest Range II completed Smallest Range II Solve ↗ ✓ Mark Smallest String Starting From Leaf completed Smallest String Starting From Leaf Solve ↗ ✓ Mark Solving Questions With Brainpower completed Solving Questions With Brainpower Solve ↗ ✓ Mark Sort Array By Parity completed Sort Array By Parity Solve ↗ ✓ Mark Sort By completed Sort By Solve ↗ ✓ Mark Sort Integers by The Number of 1 Bits completed Sort Integers by The Number of 1 Bits Solve ↗ ✓ Mark Sort Items by Groups Respecting Dependencies completed Sort Items by Groups Respecting Dependencies Solve ↗ ✓ Mark Sort Matrix by Diagonals completed Sort Matrix by Diagonals Solve ↗ ✓ Mark Sort the Jumbled Numbers completed Sort the Jumbled Numbers Solve ↗ ✓ Mark Sort the Matrix Diagonally completed Sort the Matrix Diagonally Solve ↗ ✓ Mark Sort the People completed Sort the People Solve ↗ ✓ Mark Sort the Students by Their Kth Score completed Sort the Students by Their Kth Score Solve ↗ ✓ Mark Sort Vowels in a String completed Sort Vowels in a String Solve ↗ ✓ Mark Sorting the Sentence completed Sorting the Sentence Solve ↗ ✓ Mark Special Array I completed Special Array I Solve ↗ ✓ Mark Special Array II completed Special Array II Solve ↗ ✓ Mark Special Array With X Elements Greater Than or Equal X completed Special Array With X Elements Greater Than or Equal X Solve ↗ ✓ Mark Special Binary String completed Special Binary String Solve ↗ ✓ Mark Special Positions in a Binary Matrix completed Special Positions in a Binary Matrix Solve ↗ ✓ Mark Spiral Matrix III completed Spiral Matrix III Solve ↗ ✓ Mark Split a String in Balanced Strings completed Split a String in Balanced Strings Solve ↗ ✓ Mark Split a String Into the Max Number of Unique Substrings completed Split a String Into the Max Number of Unique Substrings Solve ↗ ✓ Mark Split Array into Consecutive Subsequences completed Split Array into Consecutive Subsequences Solve ↗ ✓ Mark Split Message Based on Limit completed Split Message Based on Limit Solve ↗ ✓ Mark Stable Subarrays With Equal Boundary and Interior Sum completed Stable Subarrays With Equal Boundary and Interior Sum Solve ↗ ✓ Mark Stickers to Spell Word completed Stickers to Spell Word Solve ↗ ✓ Mark Stock Price Fluctuation completed Stock Price Fluctuation Solve ↗ ✓ Mark Stone Game II completed Stone Game II Solve ↗ ✓ Mark Strange Printer completed Strange Printer Solve ↗ ✓ Mark Strange Printer II completed Strange Printer II Solve ↗ ✓ Mark Stream of Characters completed Stream of Characters Solve ↗ ✓ Mark String Compression II completed String Compression II Solve ↗ ✓ Mark String Compression III completed String Compression III Solve ↗ ✓ Mark String Without AAA or BBB completed String Without AAA or BBB Solve ↗ ✓ Mark Strobogrammatic Number II completed Strobogrammatic Number II Solve ↗ ✓ Mark Strong Password Checker completed Strong Password Checker Solve ↗ ✓ Mark Subarray With Elements Greater Than Varying Threshold completed Subarray With Elements Greater Than Varying Threshold Solve ↗ ✓ Mark Substrings of Size Three with Distinct Characters completed Substrings of Size Three with Distinct Characters Solve ↗ ✓ Mark Sum of Absolute Differences in a Sorted Array completed Sum of Absolute Differences in a Sorted Array Solve ↗ ✓ Mark Sum of All Odd Length Subarrays completed Sum of All Odd Length Subarrays Solve ↗ ✓ Mark Sum of Digits in Base K completed Sum of Digits in Base K Solve ↗ ✓ Mark Sum of Distances in Tree completed Sum of Distances in Tree Solve ↗ ✓ Mark Sum of Perfect Square Ancestors completed Sum of Perfect Square Ancestors Solve ↗ ✓ Mark Sum of Prefix Scores of Strings completed Sum of Prefix Scores of Strings Solve ↗ ✓ Mark Sum of Unique Elements completed Sum of Unique Elements Solve ↗ ✓ Mark Super Egg Drop completed Super Egg Drop Solve ↗ ✓ Mark Super Pow completed Super Pow Solve ↗ ✓ Mark Super Ugly Number completed Super Ugly Number Solve ↗ ✓ Mark Surface Area of 3D Shapes completed Surface Area of 3D Shapes Solve ↗ ✓ Mark Swap Sex of Employees completed Swap Sex of Employees Solve ↗ ✓ Mark Take Gifts From the Richest Pile completed Take Gifts From the Richest Pile Solve ↗ ✓ Mark Take K of Each Character From Left and Right completed Take K of Each Character From Left and Right Solve ↗ ✓ Mark Taking Maximum Energy From the Mystic Dungeon completed Taking Maximum Energy From the Mystic Dungeon Solve ↗ ✓ Mark Task Scheduler II completed Task Scheduler II Solve ↗ ✓ Mark Team Scores in Football Tournament completed Team Scores in Football Tournament Solve ↗ ✓ Mark Teemo Attacking completed Teemo Attacking Solve ↗ ✓ Mark The Earliest and Latest Rounds Where Players Compete completed The Earliest and Latest Rounds Where Players Compete Solve ↗ ✓ Mark The k-th Lexicographical String of All Happy Strings of Length n completed The k-th Lexicographical String of All Happy Strings of Length n Solve ↗ ✓ Mark The Latest Time to Catch a Bus completed The Latest Time to Catch a Bus Solve ↗ ✓ Mark The Maze completed The Maze Solve ↗ ✓ Mark The Maze II completed The Maze II Solve ↗ ✓ Mark The Most Frequently Ordered Products for Each Customer completed The Most Frequently Ordered Products for Each Customer Solve ↗ ✓ Mark The Most Recent Orders for Each Product completed The Most Recent Orders for Each Product Solve ↗ ✓ Mark The Number of Beautiful Subsets completed The Number of Beautiful Subsets Solve ↗ ✓ Mark The Two Sneaky Numbers of Digitville completed The Two Sneaky Numbers of Digitville Solve ↗ ✓ Mark Three Consecutive Odds completed Three Consecutive Odds Solve ↗ ✓ Mark Tiling a Rectangle with the Fewest Squares completed Tiling a Rectangle with the Fewest Squares Solve ↗ ✓ Mark Time Needed to Buy Tickets completed Time Needed to Buy Tickets Solve ↗ ✓ Mark Time Needed to Inform All Employees completed Time Needed to Inform All Employees Solve ↗ ✓ Mark Total Characters in String After Transformations I completed Total Characters in String After Transformations I Solve ↗ ✓ Mark Traffic Light Controlled Intersection completed Traffic Light Controlled Intersection Solve ↗ ✓ Mark Tree Diameter completed Tree Diameter Solve ↗ ✓ Mark Tree Node completed Tree Node Solve ↗ ✓ Mark Trim a Binary Search Tree completed Trim a Binary Search Tree Solve ↗ ✓ Mark Tuple with Same Product completed Tuple with Same Product Solve ↗ ✓ Mark Two Best Non-Overlapping Events completed Two Best Non-Overlapping Events Solve ↗ ✓ Mark Two City Scheduling completed Two City Scheduling Solve ↗ ✓ Mark Two Out of Three completed Two Out of Three Solve ↗ ✓ Mark Two Sum III - Data structure design completed Two Sum III - Data structure design Solve ↗ ✓ Mark Two-Letter Card Game completed Two-Letter Card Game Solve ↗ ✓ Mark Ugly Number III completed Ugly Number III Solve ↗ ✓ Mark Uncommon Words from Two Sentences completed Uncommon Words from Two Sentences Solve ↗ ✓ Mark Unique 3-Digit Even Numbers completed Unique 3-Digit Even Numbers Solve ↗ ✓ Mark Unique Email Addresses completed Unique Email Addresses Solve ↗ ✓ Mark Valid Arrangement of Pairs completed Valid Arrangement of Pairs Solve ↗ ✓ Mark Valid Palindrome III completed Valid Palindrome III Solve ↗ ✓ Mark Valid Perfect Square completed Valid Perfect Square Solve ↗ ✓ Mark Valid Phone Numbers completed Valid Phone Numbers Solve ↗ ✓ Mark Valid Tic-Tac-Toe State completed Valid Tic-Tac-Toe State Solve ↗ ✓ Mark Valid Word completed Valid Word Solve ↗ ✓ Mark Validate IP Address completed Validate IP Address Solve ↗ ✓ Mark Validate Stack Sequences completed Validate Stack Sequences Solve ↗ ✓ Mark Verify Preorder Serialization of a Binary Tree completed Verify Preorder Serialization of a Binary Tree Solve ↗ ✓ Mark Verifying an Alien Dictionary completed Verifying an Alien Dictionary Solve ↗ ✓ Mark Vowel Spellchecker completed Vowel Spellchecker Solve ↗ ✓ Mark Walking Robot Simulation completed Walking Robot Simulation Solve ↗ ✓ Mark Water and Jug Problem completed Water and Jug Problem Solve ↗ ✓ Mark Water Bottles completed Water Bottles Solve ↗ ✓ Mark Water Bottles II completed Water Bottles II Solve ↗ ✓ Mark Ways to Express an Integer as Sum of Powers completed Ways to Express an Integer as Sum of Powers Solve ↗ ✓ Mark Web Crawler completed Web Crawler Solve ↗ ✓ Mark Widest Vertical Area Between Two Points Containing No Points completed Widest Vertical Area Between Two Points Containing No Points Solve ↗ ✓ Mark Wiggle Sort completed Wiggle Sort Solve ↗ ✓ Mark Wiggle Sort II completed Wiggle Sort II Solve ↗ ✓ Mark Word Pattern II completed Word Pattern II Solve ↗ ✓ Mark X of a Kind in a Deck of Cards completed X of a Kind in a Deck of Cards Solve ↗ ✓ Mark XOR Queries of a Subarray completed XOR Queries of a Subarray Solve ↗ ✓ Mark Year on Year Growth Rate completed Year on Year Growth Rate Solve ↗ ✓ Mark Zero Array Transformation I completed Zero Array Transformation I Solve ↗ ✓ Mark Zero Array Transformation II completed Zero Array Transformation II Solve ↗ ✓ Mark Zero Array Transformation III completed Zero Array Transformation III Solve ↗ ✓ Mark Zigzag Iterator completed Zigzag Iterator Solve ↗ ✓ Mark Zuma Game completed Zuma Game Solve ↗