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Interview question tracker

Meta Coding Interview Questions — Last 6 months

Practice 542 coding questions from Meta company-tagged LeetCode lists in the source’s last 6 months reporting window. Explore reported interview questions and track your progress.

Company-wide data from Fahad7177-jeh/leetcode-company-wise-questions; see its AGPL-3.0 license. All-time questions also use dataengineervishal/leetcode-companywise-questions (MIT license).

Reporting periods reflect source data, not verified interview dates. Questions can recur; inclusion does not guarantee they will appear in your interview.

Updated weekly · Latest source check: 15 Oct 2026ⓘLatest successful check of the sources used by this company. A check does not necessarily mean the questions changed.

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Top questions 542

Done	Question	LeetCode
Mark Minimum Remove to Make Valid Parentheses completed	Minimum Remove to Make Valid Parentheses	Solve
Mark Valid Palindrome II completed	Valid Palindrome II	Solve
Mark Valid Word Abbreviation completed	Valid Word Abbreviation	Solve
Mark Basic Calculator II completed	Basic Calculator II	Solve
Mark Binary Tree Right Side View completed	Binary Tree Right Side View	Solve
Mark Binary Tree Vertical Order Traversal completed	Binary Tree Vertical Order Traversal	Solve
Mark Diameter of Binary Tree completed	Diameter of Binary Tree	Solve
Mark Kth Largest Element in an Array completed	Kth Largest Element in an Array	Solve
Mark Lowest Common Ancestor of a Binary Tree completed	Lowest Common Ancestor of a Binary Tree	Solve
Mark Lowest Common Ancestor of a Binary Tree III completed	Lowest Common Ancestor of a Binary Tree III	Solve
Mark Merge Intervals completed	Merge Intervals	Solve
Mark Nested List Weight Sum completed	Nested List Weight Sum	Solve
Mark Pow(x, n) completed	Pow(x, n)	Solve
Mark Random Pick with Weight completed	Random Pick with Weight	Solve
Mark Subarray Sum Equals K completed	Subarray Sum Equals K	Solve
Mark Top K Frequent Elements completed	Top K Frequent Elements	Solve
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 Buildings With an Ocean View completed	Buildings With an Ocean View	Solve
Mark Clone Graph completed	Clone Graph	Solve
Mark Copy List with Random Pointer completed	Copy List with Random Pointer	Solve
Mark Course Schedule completed	Course Schedule	Solve
Mark Custom Sort String completed	Custom Sort String	Solve
Mark Dot Product of Two Sparse Vectors completed	Dot Product of Two Sparse Vectors	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 Peak Element completed	Find Peak Element	Solve
Mark K Closest Points to Origin completed	K Closest Points to Origin	Solve
Mark LRU Cache completed	LRU Cache	Solve
Mark Making A Large Island completed	Making A Large Island	Solve
Mark Max Consecutive Ones III completed	Max Consecutive Ones III	Solve
Mark Merge Sorted Array completed	Merge Sorted Array	Solve
Mark Minimum Window Substring completed	Minimum Window Substring	Solve
Mark Next Permutation completed	Next Permutation	Solve
Mark Range Sum of BST completed	Range Sum of BST	Solve
Mark Shortest Path in Binary Matrix completed	Shortest Path in Binary Matrix	Solve
Mark Simplify Path completed	Simplify Path	Solve
Mark Sum Root to Leaf Numbers completed	Sum Root to Leaf Numbers	Solve
Mark Valid Palindrome completed	Valid Palindrome	Solve
Mark Valid Parentheses completed	Valid Parentheses	Solve
Mark 3Sum completed	3Sum	Solve
Mark Add Strings completed	Add Strings	Solve
Mark Add Two Numbers completed	Add Two Numbers	Solve
Mark All Nodes Distance K in Binary Tree completed	All Nodes Distance K in Binary Tree	Solve
Mark Closest Binary Search Tree Value completed	Closest Binary Search Tree Value	Solve
Mark Count Nodes Equal to Average of Subtree completed	Count Nodes Equal to Average of Subtree	Solve
Mark Diagonal Traverse completed	Diagonal Traverse	Solve
Mark Exclusive Time of Functions completed	Exclusive Time of Functions	Solve
Mark Insert into a Sorted Circular Linked List completed	Insert into a Sorted Circular Linked List	Solve
Mark Interval List Intersections completed	Interval List Intersections	Solve
Mark Kth Missing Positive Number completed	Kth Missing Positive Number	Solve
Mark Longest Common Prefix completed	Longest Common Prefix	Solve
Mark Longest Palindromic Substring completed	Longest Palindromic Substring	Solve
Mark Longest Substring Without Repeating Characters completed	Longest Substring Without Repeating Characters	Solve
Mark Longest Valid Parentheses completed	Longest Valid Parentheses	Solve
Mark Maximum Swap completed	Maximum Swap	Solve
Mark Merge k Sorted Lists completed	Merge k Sorted Lists	Solve
Mark Minimum Add to Make Parentheses Valid completed	Minimum Add to Make Parentheses Valid	Solve
Mark Moving Average from Data Stream completed	Moving Average from Data Stream	Solve
Mark Palindromic Substrings completed	Palindromic Substrings	Solve
Mark Remove Duplicates from Sorted Array completed	Remove Duplicates from Sorted Array	Solve
Mark Remove Nth Node From End of List completed	Remove Nth Node From End of List	Solve
Mark Robot Room Cleaner completed	Robot Room Cleaner	Solve
Mark Simple Bank System completed	Simple Bank System	Solve
Mark Sliding Window Median completed	Sliding Window Median	Solve
Mark Valid Number completed	Valid Number	Solve
Mark Vertical Order Traversal of a Binary Tree completed	Vertical Order Traversal of a Binary Tree	Solve
Mark 4Sum completed	4Sum	Solve
Mark Accounts Merge completed	Accounts Merge	Solve
Mark Alien Dictionary completed	Alien Dictionary	Solve
Mark Binary Search Tree Iterator completed	Binary Search Tree Iterator	Solve
Mark Binary Tree Level Order Traversal completed	Binary Tree Level Order Traversal	Solve
Mark Boundary of Binary Tree completed	Boundary of Binary Tree	Solve
Mark Climbing Stairs completed	Climbing Stairs	Solve
Mark Container With Most Water completed	Container With Most Water	Solve
Mark Contains Duplicate II completed	Contains Duplicate II	Solve
Mark Continuous Subarray Sum completed	Continuous Subarray Sum	Solve
Mark Convert Binary Search Tree to Sorted Doubly Linked List completed	Convert Binary Search Tree to Sorted Doubly Linked List	Solve
Mark Decode String completed	Decode String	Solve
Mark Design Tic-Tac-Toe completed	Design Tic-Tac-Toe	Solve
Mark Find Median from Data Stream completed	Find Median from Data Stream	Solve
Mark Friends Of Appropriate Ages completed	Friends Of Appropriate Ages	Solve
Mark Generate Parentheses completed	Generate Parentheses	Solve
Mark Goat Latin completed	Goat Latin	Solve
Mark Group Anagrams completed	Group Anagrams	Solve
Mark Group Shifted Strings completed	Group Shifted Strings	Solve
Mark Koko Eating Bananas completed	Koko Eating Bananas	Solve
Mark Kth Smallest Element in a Sorted Matrix completed	Kth Smallest Element in a Sorted Matrix	Solve
Mark Majority Element completed	Majority Element	Solve
Mark Max Area of Island completed	Max Area of Island	Solve
Mark Maximum Subarray completed	Maximum Subarray	Solve
Mark Median of Two Sorted Arrays completed	Median of Two Sorted Arrays	Solve
Mark Merge Two Sorted Lists completed	Merge Two Sorted Lists	Solve
Mark Missing Element in Sorted Array completed	Missing Element in Sorted Array	Solve
Mark Missing Ranges completed	Missing Ranges	Solve
Mark Move Zeroes completed	Move Zeroes	Solve
Mark Number of Islands completed	Number of Islands	Solve
Mark Palindrome Number completed	Palindrome Number	Solve
Mark Peak Index in a Mountain Array completed	Peak Index in a Mountain Array	Solve
Mark Populating Next Right Pointers in Each Node completed	Populating Next Right Pointers in Each Node	Solve
Mark Random Pick Index completed	Random Pick Index	Solve
Mark Remove All Adjacent Duplicates in String II completed	Remove All Adjacent Duplicates in String II	Solve
Mark Roman to Integer completed	Roman to Integer	Solve
Mark Rotate Image completed	Rotate Image	Solve
Mark Search in Rotated Sorted Array completed	Search in Rotated Sorted Array	Solve
Mark Set Matrix Zeroes completed	Set Matrix Zeroes	Solve
Mark Sliding Window Maximum completed	Sliding Window Maximum	Solve
Mark Sort Colors completed	Sort Colors	Solve
Mark Squares of a Sorted Array completed	Squares of a Sorted Array	Solve
Mark String to Integer (atoi) completed	String to Integer (atoi)	Solve
Mark Strobogrammatic Number completed	Strobogrammatic Number	Solve
Mark Subsets completed	Subsets	Solve
Mark Swim in Rising Water completed	Swim in Rising Water	Solve
Mark Trapping Rain Water completed	Trapping Rain Water	Solve
Mark Unique Paths completed	Unique Paths	Solve
Mark Valid Palindrome III completed	Valid Palindrome III	Solve
Mark Word Ladder completed	Word Ladder	Solve
Mark 3Sum Closest completed	3Sum Closest	Solve
Mark Add Binary completed	Add Binary	Solve
Mark Add Two Integers completed	Add Two Integers	Solve
Mark Article Views I completed	Article Views I	Solve
Mark Battleships in a Board completed	Battleships in a Board	Solve
Mark Best Time to Buy and Sell Stock II completed	Best Time to Buy and Sell Stock II	Solve
Mark Best Time to Buy and Sell Stock III completed	Best Time to Buy and Sell Stock III	Solve
Mark Binary Search completed	Binary Search	Solve
Mark Binary Tree Inorder Traversal completed	Binary Tree Inorder Traversal	Solve
Mark Binary Tree Maximum Path Sum completed	Binary Tree Maximum Path Sum	Solve
Mark Can Place Flowers completed	Can Place Flowers	Solve
Mark Capacity To Ship Packages Within D Days completed	Capacity To Ship Packages Within D Days	Solve
Mark Car Pooling completed	Car Pooling	Solve
Mark Check Completeness of a Binary Tree completed	Check Completeness of a Binary Tree	Solve
Mark Coin Change completed	Coin Change	Solve
Mark Combinations completed	Combinations	Solve
Mark Construct Binary Tree from String completed	Construct Binary Tree from String	Solve
Mark Contains Duplicate completed	Contains Duplicate	Solve
Mark Course Schedule II completed	Course Schedule II	Solve
Mark Decode Ways completed	Decode Ways	Solve
Mark Diagonal Traverse II completed	Diagonal Traverse II	Solve
Mark Expression Add Operators completed	Expression Add Operators	Solve
Mark Find K Closest Elements completed	Find K Closest Elements	Solve
Mark Find Pivot Index completed	Find Pivot Index	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 Fruits Into Baskets II completed	Fruits Into Baskets II	Solve
Mark Gas Station completed	Gas Station	Solve
Mark House Robber II completed	House Robber II	Solve
Mark Insert Delete GetRandom O(1) completed	Insert Delete GetRandom O(1)	Solve
Mark Jump Game completed	Jump Game	Solve
Mark Kids With the Greatest Number of Candies completed	Kids With the Greatest Number of Candies	Solve
Mark Largest Rectangle in Histogram completed	Largest Rectangle in Histogram	Solve
Mark Letter Combinations of a Phone Number completed	Letter Combinations of a Phone Number	Solve
Mark Longest Common Subsequence completed	Longest Common Subsequence	Solve
Mark Longest Consecutive Sequence completed	Longest Consecutive Sequence	Solve
Mark Longest Increasing Path in a Matrix completed	Longest Increasing Path in a Matrix	Solve
Mark Longest Increasing Subsequence completed	Longest Increasing Subsequence	Solve
Mark Longest Repeating Character Replacement completed	Longest Repeating Character Replacement	Solve
Mark Maximal Rectangle completed	Maximal Rectangle	Solve
Mark Meeting Rooms II completed	Meeting Rooms II	Solve
Mark Middle of the Linked List completed	Middle of the Linked List	Solve
Mark Multiply Strings completed	Multiply Strings	Solve
Mark Next Greater Element I completed	Next Greater Element I	Solve
Mark Next Greater Element II completed	Next Greater Element II	Solve
Mark Next Greater Element III completed	Next Greater Element III	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 Pascal's Triangle completed	Pascal's Triangle	Solve
Mark Plus One completed	Plus One	Solve
Mark Power of Two completed	Power of Two	Solve
Mark Product of Two Run-Length Encoded Arrays completed	Product of Two Run-Length Encoded Arrays	Solve
Mark Range Sum Query - Immutable completed	Range Sum Query - Immutable	Solve
Mark Regular Expression Matching completed	Regular Expression Matching	Solve
Mark Remove All Adjacent Duplicates In String completed	Remove All Adjacent Duplicates In String	Solve
Mark Remove Element completed	Remove Element	Solve
Mark Remove Invalid Parentheses completed	Remove Invalid Parentheses	Solve
Mark Reverse Bits completed	Reverse Bits	Solve
Mark Reverse Integer completed	Reverse Integer	Solve
Mark Reverse Linked List completed	Reverse Linked List	Solve
Mark Rising Temperature completed	Rising Temperature	Solve
Mark Rotate Array completed	Rotate Array	Solve
Mark Rotting Oranges completed	Rotting Oranges	Solve
Mark Same Tree completed	Same Tree	Solve
Mark Search Insert Position completed	Search Insert Position	Solve
Mark Shortest Bridge completed	Shortest Bridge	Solve
Mark Shortest Distance from All Buildings completed	Shortest Distance from All Buildings	Solve
Mark Single Element in a Sorted Array completed	Single Element in a Sorted Array	Solve
Mark Single Number completed	Single Number	Solve
Mark Sparse Matrix Multiplication completed	Sparse Matrix Multiplication	Solve
Mark Spiral Matrix completed	Spiral Matrix	Solve
Mark Sqrt(x) completed	Sqrt(x)	Solve
Mark String Compression completed	String Compression	Solve
Mark Strobogrammatic Number II completed	Strobogrammatic Number II	Solve
Mark Toeplitz Matrix completed	Toeplitz Matrix	Solve
Mark Valid Anagram completed	Valid Anagram	Solve
Mark Walls and Gates completed	Walls and Gates	Solve
Mark Zigzag Conversion completed	Zigzag Conversion	Solve
Mark 24 Game completed	24 Game	Solve
Mark Asteroid Collision completed	Asteroid Collision	Solve
Mark Average Selling Price completed	Average Selling Price	Solve
Mark Balanced Binary Tree completed	Balanced Binary Tree	Solve
Mark Basic Calculator completed	Basic Calculator	Solve
Mark Best Time to Buy and Sell Stock using Strategy completed	Best Time to Buy and Sell Stock using Strategy	Solve
Mark Big Countries completed	Big Countries	Solve
Mark Binary Tree Level Order Traversal II completed	Binary Tree Level Order Traversal II	Solve
Mark Binary Tree Zigzag Level Order Traversal completed	Binary Tree Zigzag Level Order Traversal	Solve
Mark Bulb Switcher completed	Bulb Switcher	Solve
Mark Candy completed	Candy	Solve
Mark Check if a Parentheses String Can Be Valid completed	Check if a Parentheses String Can Be Valid	Solve
Mark Check if Array Is Sorted and Rotated completed	Check if Array Is Sorted and Rotated	Solve
Mark Check If Two String Arrays are Equivalent completed	Check If Two String Arrays are Equivalent	Solve
Mark Coin Change II completed	Coin Change II	Solve
Mark Collect Coins in a Tree completed	Collect Coins in a Tree	Solve
Mark Combination Sum completed	Combination Sum	Solve
Mark Combination Sum II completed	Combination Sum II	Solve
Mark Combine Two Tables completed	Combine Two Tables	Solve
Mark Construct Binary Tree from Preorder and Inorder Traversal completed	Construct Binary Tree from Preorder and Inorder Traversal	Solve
Mark Contiguous Array completed	Contiguous Array	Solve
Mark Count Elements With Maximum Frequency completed	Count Elements With Maximum Frequency	Solve
Mark Count Good Numbers completed	Count Good Numbers	Solve
Mark Count Number of Nice Subarrays completed	Count Number of Nice Subarrays	Solve
Mark Count Primes completed	Count Primes	Solve
Mark Count Unguarded Cells in the Grid completed	Count Unguarded Cells in the Grid	Solve
Mark Counting Bits completed	Counting Bits	Solve
Mark Customers Who Bought All Products completed	Customers Who Bought All Products	Solve
Mark Cutting Ribbons completed	Cutting Ribbons	Solve
Mark Delete Node in a Linked List completed	Delete Node in a Linked List	Solve
Mark Design Circular Queue completed	Design Circular Queue	Solve
Mark Design HashMap completed	Design HashMap	Solve
Mark Design Skiplist completed	Design Skiplist	Solve
Mark Distribute Candies Among Children II completed	Distribute Candies Among Children II	Solve
Mark Divide Two Integers completed	Divide Two Integers	Solve
Mark Element Appearing More Than 25% In Sorted Array completed	Element Appearing More Than 25% In Sorted Array	Solve
Mark Employees Earning More Than Their Managers completed	Employees Earning More Than Their Managers	Solve
Mark Exchange Seats completed	Exchange Seats	Solve
Mark Find All K-Distant Indices in an Array completed	Find All K-Distant Indices in an Array	Solve
Mark Find Duplicate File in System completed	Find Duplicate File in System	Solve
Mark Find Lucky Integer in an Array completed	Find Lucky Integer in an Array	Solve
Mark Find Minimum in Rotated Sorted Array completed	Find Minimum in Rotated Sorted Array	Solve
Mark Find Most Frequent Vowel and Consonant completed	Find Most Frequent Vowel and Consonant	Solve
Mark Find Subsequence of Length K With the Largest Sum completed	Find Subsequence of Length K With the Largest Sum	Solve
Mark Find the Duplicate Number completed	Find the Duplicate Number	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 Minimum Amount of Time to Brew Potions completed	Find the Minimum Amount of Time to Brew Potions	Solve
Mark Find the Peaks completed	Find the Peaks	Solve
Mark First Bad Version completed	First Bad Version	Solve
Mark First Missing Positive completed	First Missing Positive	Solve
Mark Flatten Nested List Iterator completed	Flatten Nested List Iterator	Solve
Mark Fraction to Recurring Decimal completed	Fraction to Recurring Decimal	Solve
Mark Frequency of the Most Frequent Element completed	Frequency of the Most Frequent Element	Solve
Mark Friend Requests II: Who Has the Most Friends completed	Friend Requests II: Who Has the Most Friends	Solve
Mark Fruit Into Baskets completed	Fruit Into Baskets	Solve
Mark Game Play Analysis IV completed	Game Play Analysis IV	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 Integer to Roman completed	Integer to Roman	Solve
Mark Interleaving String completed	Interleaving String	Solve
Mark Intersection of Two Arrays completed	Intersection of Two Arrays	Solve
Mark Intersection of Two Arrays II completed	Intersection of Two Arrays II	Solve
Mark Intersection of Two Linked Lists completed	Intersection of Two Linked Lists	Solve
Mark Investments in 2016 completed	Investments in 2016	Solve
Mark Is Subsequence completed	Is Subsequence	Solve
Mark Isomorphic Strings completed	Isomorphic Strings	Solve
Mark Largest Color Value in a Directed Graph completed	Largest Color Value in a Directed Graph	Solve
Mark Largest Number completed	Largest Number	Solve
Mark Letter Case Permutation completed	Letter Case Permutation	Solve
Mark Linked List Cycle completed	Linked List Cycle	Solve
Mark Longest String Chain completed	Longest String Chain	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 II completed	Lowest Common Ancestor of a Binary Tree II	Solve
Mark Lowest Common Ancestor of Deepest Leaves completed	Lowest Common Ancestor of Deepest Leaves	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 Number of K-Sum Pairs completed	Max Number of K-Sum Pairs	Solve
Mark Maximum Difference by Remapping a Digit completed	Maximum Difference by Remapping a Digit	Solve
Mark Maximum Level Sum of a Binary Tree completed	Maximum Level Sum of a Binary Tree	Solve
Mark Maximum Number of Events That Can Be Attended completed	Maximum Number of Events That Can Be Attended	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 Points You Can Obtain from Cards completed	Maximum Points You Can Obtain from Cards	Solve
Mark Maximum Product Subarray completed	Maximum Product Subarray	Solve
Mark Maximum Sum of 3 Non-Overlapping Subarrays completed	Maximum Sum of 3 Non-Overlapping Subarrays	Solve
Mark Maximum Width of Binary Tree completed	Maximum Width of Binary Tree	Solve
Mark Merge Two Binary Trees completed	Merge Two Binary Trees	Solve
Mark Min Cost Climbing Stairs completed	Min Cost Climbing Stairs	Solve
Mark Min Stack completed	Min Stack	Solve
Mark Minesweeper completed	Minesweeper	Solve
Mark Minimize the Maximum Difference of Pairs completed	Minimize the Maximum Difference of Pairs	Solve
Mark Minimum Absolute Difference Between Elements With Constraint completed	Minimum Absolute Difference Between Elements With Constraint	Solve
Mark Minimum Cost For Tickets completed	Minimum Cost For Tickets	Solve
Mark Minimum Depth of Binary Tree completed	Minimum Depth of Binary Tree	Solve
Mark Minimum Operations to Make the Integer Zero completed	Minimum Operations to Make the Integer Zero	Solve
Mark Minimum Path Sum completed	Minimum Path Sum	Solve
Mark Minimum Size Subarray Sum completed	Minimum Size Subarray Sum	Solve
Mark Minimum Time to Collect All Apples in a Tree completed	Minimum Time to Collect All Apples in a Tree	Solve
Mark Missing Number completed	Missing Number	Solve
Mark Monotonic Array completed	Monotonic Array	Solve
Mark Monthly Transactions I completed	Monthly Transactions I	Solve
Mark N-Queens completed	N-Queens	Solve
Mark Non-overlapping Intervals completed	Non-overlapping Intervals	Solve
Mark Number of Matching Subsequences completed	Number of Matching Subsequences	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 Online Stock Span completed	Online Stock Span	Solve
Mark Open the Lock completed	Open the Lock	Solve
Mark Pacific Atlantic Water Flow completed	Pacific Atlantic Water Flow	Solve
Mark Partition Equal Subset Sum completed	Partition Equal Subset Sum	Solve
Mark Path Sum II completed	Path Sum II	Solve
Mark Permutations completed	Permutations	Solve
Mark Power Grid Maintenance completed	Power Grid Maintenance	Solve
Mark Product of the Last K Numbers completed	Product of the Last K Numbers	Solve
Mark Rank Scores completed	Rank Scores	Solve
Mark Rank Transform of an Array completed	Rank Transform of an Array	Solve
Mark Rearrange Array Elements by Sign completed	Rearrange Array Elements by Sign	Solve
Mark Recyclable and Low Fat Products completed	Recyclable and Low Fat Products	Solve
Mark Redundant Connection completed	Redundant Connection	Solve
Mark Remove All Occurrences of a Substring completed	Remove All Occurrences of a Substring	Solve
Mark Remove K Digits completed	Remove K Digits	Solve
Mark Reorder List completed	Reorder List	Solve
Mark Repeated DNA Sequences completed	Repeated DNA Sequences	Solve
Mark Repeated String Match completed	Repeated String Match	Solve
Mark Reverse Linked List II completed	Reverse Linked List II	Solve
Mark Reverse Nodes in k-Group completed	Reverse Nodes in k-Group	Solve
Mark Reverse Pairs completed	Reverse Pairs	Solve
Mark Reverse String completed	Reverse String	Solve
Mark Reverse Vowels of a String completed	Reverse Vowels of a String	Solve
Mark Reverse Words in a String completed	Reverse Words in a String	Solve
Mark Richest Customer Wealth completed	Richest Customer Wealth	Solve
Mark Rotate List completed	Rotate List	Solve
Mark Rotate String completed	Rotate String	Solve
Mark Running Sum of 1d Array completed	Running Sum of 1d Array	Solve
Mark Search a 2D Matrix completed	Search a 2D Matrix	Solve
Mark Search a 2D Matrix II completed	Search a 2D Matrix II	Solve
Mark Second Highest Salary completed	Second Highest Salary	Solve
Mark Serialize and Deserialize Binary Tree completed	Serialize and Deserialize Binary Tree	Solve
Mark Shortest Path in a Grid with Obstacles Elimination completed	Shortest Path in a Grid with Obstacles Elimination	Solve
Mark Smallest Subtree with all the Deepest Nodes completed	Smallest Subtree with all the Deepest Nodes	Solve
Mark Snakes and Ladders completed	Snakes and Ladders	Solve
Mark Sort Array By Parity completed	Sort Array By Parity	Solve
Mark Sort Characters By Frequency completed	Sort Characters By Frequency	Solve
Mark Sort List completed	Sort List	Solve
Mark Split Array Largest Sum completed	Split Array Largest Sum	Solve
Mark Students and Examinations completed	Students and Examinations	Solve
Mark Subarray Product Less Than K completed	Subarray Product Less Than K	Solve
Mark Subsets II completed	Subsets II	Solve
Mark Successful Pairs of Spells and Potions completed	Successful Pairs of Spells and Potions	Solve
Mark Sudoku Solver completed	Sudoku Solver	Solve
Mark Sum of Square Numbers completed	Sum of Square Numbers	Solve
Mark Sum of Subarray Minimums completed	Sum of Subarray Minimums	Solve
Mark Target Sum completed	Target Sum	Solve
Mark Task Scheduler completed	Task Scheduler	Solve
Mark Tenth Line completed	Tenth Line	Solve
Mark Text Justification completed	Text Justification	Solve
Mark The Maze completed	The Maze	Solve
Mark The Skyline Problem completed	The Skyline Problem	Solve
Mark Transpose Matrix completed	Transpose Matrix	Solve
Mark Triangle completed	Triangle	Solve
Mark Two Sum II - Input Array Is Sorted completed	Two Sum II - Input Array Is Sorted	Solve
Mark Unique Binary Search Trees completed	Unique Binary Search Trees	Solve
Mark Unique Binary Search Trees II completed	Unique Binary Search Trees II	Solve
Mark Unique Number of Occurrences completed	Unique Number of Occurrences	Solve
Mark Valid Parenthesis String completed	Valid Parenthesis String	Solve
Mark Valid Sudoku completed	Valid Sudoku	Solve
Mark Validate Binary Search Tree completed	Validate Binary Search Tree	Solve
Mark Validate IP Address completed	Validate IP Address	Solve
Mark Wildcard Matching completed	Wildcard Matching	Solve
Mark Word Break completed	Word Break	Solve
Mark Word Ladder II completed	Word Ladder II	Solve
Mark Word Search completed	Word Search	Solve
Mark 01 Matrix completed	01 Matrix	Solve
Mark 132 Pattern completed	132 Pattern	Solve
Mark Add Bold Tag in String completed	Add Bold Tag in String	Solve
Mark Add Two Numbers II completed	Add Two Numbers II	Solve
Mark Arithmetic Slices completed	Arithmetic Slices	Solve
Mark Average of Levels in Binary Tree completed	Average of Levels in Binary Tree	Solve
Mark Average Time of Process per Machine completed	Average Time of Process per Machine	Solve
Mark Avoid Flood in The City completed	Avoid Flood in The City	Solve
Mark Best Sightseeing Pair completed	Best Sightseeing Pair	Solve
Mark Binary Subarrays With Sum completed	Binary Subarrays With Sum	Solve
Mark Cheapest Flights Within K Stops completed	Cheapest Flights Within K Stops	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 the Sentence Is Pangram completed	Check if the Sentence Is Pangram	Solve
Mark Cherry Pickup completed	Cherry Pickup	Solve
Mark Clone Binary Tree With Random Pointer completed	Clone Binary Tree With Random Pointer	Solve
Mark Compute Decimal Representation completed	Compute Decimal Representation	Solve
Mark Concatenation of Array completed	Concatenation of Array	Solve
Mark Construct Binary Search Tree from Preorder Traversal completed	Construct Binary Search Tree from Preorder Traversal	Solve
Mark Convert a Number to Hexadecimal completed	Convert a Number to Hexadecimal	Solve
Mark Convert Binary Number in a Linked List to Integer completed	Convert Binary Number in a Linked List to Integer	Solve
Mark Count Binary Substrings completed	Count Binary Substrings	Solve
Mark Count Negative Numbers in a Sorted Matrix completed	Count Negative Numbers in a Sorted Matrix	Solve
Mark Count Number of Trapezoids II completed	Count Number of Trapezoids II	Solve
Mark Count Square Submatrices with All Ones completed	Count Square Submatrices with All Ones	Solve
Mark Count Symmetric Integers completed	Count Symmetric Integers	Solve
Mark Count the Number of Infection Sequences completed	Count the Number of Infection Sequences	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 Never Order completed	Customers Who Never Order	Solve
Mark Decode the Message completed	Decode the Message	Solve
Mark Defuse the Bomb completed	Defuse the Bomb	Solve
Mark Delete Duplicate Emails completed	Delete Duplicate Emails	Solve
Mark Design a Text Editor completed	Design a Text Editor	Solve
Mark Design Memory Allocator completed	Design Memory Allocator	Solve
Mark Destination City completed	Destination City	Solve
Mark Distinct Subsequences completed	Distinct Subsequences	Solve
Mark Divisible and Non-divisible Sums Difference completed	Divisible and Non-divisible Sums Difference	Solve
Mark Dungeon Game completed	Dungeon Game	Solve
Mark Evaluate Division completed	Evaluate Division	Solve
Mark Find a Peak Element II completed	Find a Peak Element II	Solve
Mark Find All Anagrams in a String completed	Find All Anagrams in a String	Solve
Mark Find Books with No Available Copies completed	Find Books with No Available Copies	Solve
Mark Find Closest Person completed	Find Closest Person	Solve
Mark Find K Pairs with Smallest Sums completed	Find K Pairs with Smallest Sums	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 N Unique Integers Sum up to Zero completed	Find N Unique Integers Sum up to Zero	Solve
Mark Find Root of N-Ary Tree completed	Find Root of N-Ary Tree	Solve
Mark Find the Celebrity completed	Find the Celebrity	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 Maximum Length of Valid Subsequence I completed	Find the Maximum Length of Valid Subsequence I	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 Number of Ways to Place People II completed	Find the Number of Ways to Place People II	Solve
Mark Find the Original Typed String I completed	Find the Original Typed String I	Solve
Mark Find the Prefix Common Array of Two Arrays completed	Find the Prefix Common Array of Two Arrays	Solve
Mark Find the Smallest Divisor Given a Threshold completed	Find the Smallest Divisor Given a Threshold	Solve
Mark Find the XOR of Numbers Which Appear Twice completed	Find the XOR of Numbers Which Appear Twice	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 Finding Pairs With a Certain Sum completed	Finding Pairs With a Certain Sum	Solve
Mark First Unique Character in a String completed	First Unique Character in a String	Solve
Mark Flatten Binary Tree to Linked List completed	Flatten Binary Tree to Linked List	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 Hand of Straights completed	Hand of Straights	Solve
Mark Happy Number completed	Happy Number	Solve
Mark House Robber completed	House Robber	Solve
Mark Human Traffic of Stadium completed	Human Traffic of Stadium	Solve
Mark Immediate Food Delivery II completed	Immediate Food Delivery II	Solve
Mark Implement Queue using Stacks completed	Implement Queue using Stacks	Solve
Mark Increment Submatrices by One completed	Increment Submatrices by One	Solve
Mark Insertion Sort List completed	Insertion Sort List	Solve
Mark Integer Break completed	Integer Break	Solve
Mark Invert Binary Tree completed	Invert Binary Tree	Solve
Mark Island Perimeter completed	Island Perimeter	Solve
Mark Jewels and Stones completed	Jewels and Stones	Solve
Mark Jump Game II completed	Jump Game II	Solve
Mark Keep Multiplying Found Values by Two completed	Keep Multiplying Found Values by Two	Solve
Mark Kth Smallest Element in a BST completed	Kth Smallest Element in a BST	Solve
Mark Largest BST Subtree completed	Largest BST Subtree	Solve
Mark Largest Perimeter Triangle completed	Largest Perimeter Triangle	Solve
Mark Largest Plus Sign completed	Largest Plus Sign	Solve
Mark Lemonade Change completed	Lemonade Change	Solve
Mark Length of Last Word completed	Length of Last Word	Solve
Mark Lexicographically Minimum String After Removing Stars completed	Lexicographically Minimum String After Removing Stars	Solve
Mark Linked List Cycle II completed	Linked List Cycle II	Solve
Mark Longest Harmonious Subsequence completed	Longest Harmonious Subsequence	Solve
Mark Make Array Elements Equal to Zero completed	Make Array Elements Equal to Zero	Solve
Mark Matchsticks to Square completed	Matchsticks to Square	Solve
Mark Max Points on a Line completed	Max Points on a Line	Solve
Mark Maximum 69 Number completed	Maximum 69 Number	Solve
Mark Maximum Alternating Subsequence Sum completed	Maximum Alternating Subsequence Sum	Solve
Mark Maximum Area of Longest Diagonal Rectangle completed	Maximum Area of Longest Diagonal Rectangle	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 Candies Allocated to K Children completed	Maximum Candies Allocated to K Children	Solve
Mark Maximum Frequency of an Element After Performing Operations I completed	Maximum Frequency of an Element After Performing Operations I	Solve
Mark Maximum Manhattan Distance After K Changes completed	Maximum Manhattan Distance After K Changes	Solve
Mark Maximum Product of Two Elements in an Array completed	Maximum Product of Two Elements in an Array	Solve
Mark Maximum Score From Removing Substrings completed	Maximum Score From Removing Substrings	Solve
Mark Maximum Unique Subarray Sum After Deletion completed	Maximum Unique Subarray Sum After Deletion	Solve
Mark Maximum XOR of Two Numbers in an Array completed	Maximum XOR of Two Numbers in an Array	Solve
Mark Merge Strings Alternately completed	Merge Strings Alternately	Solve
Mark Merge Two 2D Arrays by Summing Values completed	Merge Two 2D Arrays by Summing Values	Solve
Mark Minimize Maximum Pair Sum in Array completed	Minimize Maximum Pair Sum in Array	Solve
Mark Minimum Falling Path Sum completed	Minimum Falling Path Sum	Solve
Mark Minimum Knight Moves completed	Minimum Knight Moves	Solve
Mark Minimum Number of Days to Make m Bouquets completed	Minimum Number of Days to Make m Bouquets	Solve
Mark Minimum Operations to Convert All Elements to Zero completed	Minimum Operations to Convert All Elements to Zero	Solve
Mark Minimum Score After Removals on a Tree completed	Minimum Score After Removals on a Tree	Solve
Mark Minimum Score Triangulation of Polygon completed	Minimum Score Triangulation of Polygon	Solve
Mark Minimum Time Difference completed	Minimum Time Difference	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 Movie Rating completed	Movie Rating	Solve
Mark Network Delay Time completed	Network Delay Time	Solve
Mark New 21 Game completed	New 21 Game	Solve
Mark Next Greater Numerically Balanced Number completed	Next Greater Numerically Balanced Number	Solve
Mark Nim Game completed	Nim Game	Solve
Mark Non-decreasing Array completed	Non-decreasing Array	Solve
Mark Number of 1 Bits completed	Number of 1 Bits	Solve
Mark Number of Pairs Satisfying Inequality completed	Number of Pairs Satisfying Inequality	Solve
Mark Number of Zero-Filled Subarrays completed	Number of Zero-Filled Subarrays	Solve
Mark Ones and Zeroes completed	Ones and Zeroes	Solve
Mark Parsing A Boolean Expression completed	Parsing A Boolean Expression	Solve
Mark Partition Array into Two Equal Product Subsets completed	Partition Array into Two Equal Product Subsets	Solve
Mark Partition Labels completed	Partition Labels	Solve
Mark Path Sum completed	Path Sum	Solve
Mark Path Sum III completed	Path Sum III	Solve
Mark Permutations II completed	Permutations II	Solve
Mark Populating Next Right Pointers in Each Node II completed	Populating Next Right Pointers in Each Node II	Solve
Mark Power of Three completed	Power of Three	Solve
Mark Primary Department for Each Employee completed	Primary Department for Each Employee	Solve
Mark Product of Array Except Self completed	Product of Array Except Self	Solve
Mark Product Sales Analysis I completed	Product Sales Analysis I	Solve
Mark Product Sales Analysis III completed	Product Sales Analysis III	Solve
Mark Rabbits in Forest completed	Rabbits in Forest	Solve
Mark Ransom Note completed	Ransom Note	Solve
Mark Rearranging Fruits completed	Rearranging Fruits	Solve
Mark Recover Binary Search Tree completed	Recover Binary Search Tree	Solve
Mark Reformat Department Table completed	Reformat Department Table	Solve
Mark Remove Duplicate Letters completed	Remove Duplicate Letters	Solve
Mark Remove Duplicates from Sorted Array II completed	Remove Duplicates from Sorted Array II	Solve
Mark Remove Linked List Elements completed	Remove Linked List Elements	Solve
Mark Remove Outermost Parentheses completed	Remove Outermost Parentheses	Solve
Mark Replace Employee ID With The Unique Identifier completed	Replace Employee ID With The Unique Identifier	Solve
Mark Restore IP Addresses completed	Restore IP Addresses	Solve
Mark Restore the Array From Adjacent Pairs completed	Restore the Array From Adjacent Pairs	Solve
Mark Reverse String II completed	Reverse String II	Solve
Mark Search in Rotated Sorted Array II completed	Search in Rotated Sorted Array II	Solve
Mark Smallest Range Covering Elements from K Lists completed	Smallest Range Covering Elements from K Lists	Solve
Mark Smallest Subarrays With Maximum Bitwise OR completed	Smallest Subarrays With Maximum Bitwise OR	Solve
Mark Sort Array by Increasing Frequency completed	Sort Array by Increasing Frequency	Solve
Mark Spiral Matrix II completed	Spiral Matrix II	Solve
Mark Subtract the Product and Sum of Digits of an Integer completed	Subtract the Product and Sum of Digits of an Integer	Solve
Mark Sum of Beauty of All Substrings completed	Sum of Beauty of All Substrings	Solve
Mark Sum of k-Mirror Numbers completed	Sum of k-Mirror Numbers	Solve
Mark Sum of Root To Leaf Binary Numbers completed	Sum of Root To Leaf Binary Numbers	Solve
Mark Surrounded Regions completed	Surrounded Regions	Solve
Mark Swap Nodes in Pairs completed	Swap Nodes in Pairs	Solve
Mark Swap Sex of Employees completed	Swap Sex of Employees	Solve
Mark Swapping Nodes in a Linked List completed	Swapping Nodes in a Linked List	Solve
Mark The Earliest and Latest Rounds Where Players Compete completed	The Earliest and Latest Rounds Where Players Compete	Solve
Mark Top K Frequent Words completed	Top K Frequent Words	Solve
Mark Total Hamming Distance completed	Total Hamming Distance	Solve
Mark Triangle Judgement completed	Triangle Judgement	Solve
Mark Two Sum IV - Input is a BST completed	Two Sum IV - Input is a BST	Solve
Mark Unique Paths II completed	Unique Paths II	Solve
Mark User Activity for the Past 30 Days I completed	User Activity for the Past 30 Days I	Solve
Mark Valid Mountain Array completed	Valid Mountain Array	Solve
Mark Valid Perfect Square completed	Valid Perfect Square	Solve
Mark Valid Triangle Number completed	Valid Triangle Number	Solve
Mark Verifying an Alien Dictionary completed	Verifying an Alien Dictionary	Solve
Mark Vowels Game in a String completed	Vowels Game in a String	Solve
Mark Water Bottles completed	Water Bottles	Solve