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Interview question tracker

Cisco Coding Interview Questions — All time

Practice 88 coding questions from Cisco company-tagged LeetCode lists across all available reporting periods. 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.

One question at a time.

Top questions 88

Done	Question	LeetCode
Mark Collect Coins in a Tree completed	Collect Coins in a Tree	Solve
Mark House Robber completed	House Robber	Solve
Mark Longest Palindromic Substring completed	Longest Palindromic Substring	Solve
Mark Lucky Numbers in a Matrix completed	Lucky Numbers in a Matrix	Solve
Mark Rotate Image completed	Rotate Image	Solve
Mark Spiral Matrix completed	Spiral Matrix	Solve
Mark Check if Binary String Has at Most One Segment of Ones completed	Check if Binary String Has at Most One Segment of Ones	Solve
Mark Find the Largest Area of Square Inside Two Rectangles completed	Find the Largest Area of Square Inside Two Rectangles	Solve
Mark Find Third Transaction completed	Find Third Transaction	Solve
Mark Fizz Buzz completed	Fizz Buzz	Solve
Mark Implement Router completed	Implement Router	Solve
Mark LRU Cache completed	LRU Cache	Solve
Mark Minimum Cost to Make Array Equal completed	Minimum Cost to Make Array Equal	Solve
Mark Number of Equal Count Substrings completed	Number of Equal Count Substrings	Solve
Mark Number of Valid Words in a Sentence completed	Number of Valid Words in a Sentence	Solve
Mark Power Grid Maintenance completed	Power Grid Maintenance	Solve
Mark Sum of k-Mirror Numbers completed	Sum of k-Mirror Numbers	Solve
Mark Word Search II completed	Word Search II	Solve
Mark Add Two Numbers completed	Add Two Numbers	Solve
Mark Diagonal Traverse completed	Diagonal Traverse	Solve
Mark Edit Distance completed	Edit Distance	Solve
Mark Happy Number completed	Happy Number	Solve
Mark Longest Substring Without Repeating Characters completed	Longest Substring Without Repeating Characters	Solve
Mark Maximum Difference Between Increasing Elements completed	Maximum Difference Between Increasing Elements	Solve
Mark Maximum Subarray completed	Maximum Subarray	Solve
Mark Merge Intervals completed	Merge Intervals	Solve
Mark Minimum Sensors to Cover Grid completed	Minimum Sensors to Cover Grid	Solve
Mark Minimum Time to Collect All Apples in a Tree completed	Minimum Time to Collect All Apples in a Tree	Solve
Mark Valid Parentheses completed	Valid Parentheses	Solve
Mark 3Sum completed	3Sum	Solve
Mark Best Time to Buy and Sell Stock completed	Best Time to Buy and Sell Stock	Solve
Mark Decode String completed	Decode String	Solve
Mark Find Servers That Handled Most Number of Requests completed	Find Servers That Handled Most Number of Requests	Solve
Mark Gas Station completed	Gas Station	Solve
Mark Group Anagrams completed	Group Anagrams	Solve
Mark Insert Delete GetRandom O(1) completed	Insert Delete GetRandom O(1)	Solve
Mark Letter Combinations of a Phone Number completed	Letter Combinations of a Phone Number	Solve
Mark Linked List Cycle completed	Linked List Cycle	Solve
Mark Longest Consecutive Sequence completed	Longest Consecutive Sequence	Solve
Mark Max Points on a Line completed	Max Points on a Line	Solve
Mark Meeting Rooms II completed	Meeting Rooms II	Solve
Mark Merge Sorted Array completed	Merge Sorted Array	Solve
Mark Number of Islands completed	Number of Islands	Solve
Mark Permutation in String completed	Permutation in String	Solve
Mark Predict the Winner completed	Predict the Winner	Solve
Mark Remove Duplicates from Sorted Array completed	Remove Duplicates from Sorted Array	Solve
Mark Reverse Linked List completed	Reverse Linked List	Solve
Mark Reverse Nodes in k-Group completed	Reverse Nodes in k-Group	Solve
Mark Reverse Words in a String completed	Reverse Words in a String	Solve
Mark Search a 2D Matrix completed	Search a 2D Matrix	Solve
Mark Single Number completed	Single Number	Solve
Mark Trapping Rain Water completed	Trapping Rain Water	Solve
Mark Two Sum completed	Two Sum	Solve
Mark Word Search completed	Word Search	Solve
Mark Burst Balloons completed	Burst Balloons	Solve
Mark Can Place Flowers completed	Can Place Flowers	Solve
Mark Compare Version Numbers completed	Compare Version Numbers	Solve
Mark Convert Binary Number in a Linked List to Integer completed	Convert Binary Number in a Linked List to Integer	Solve
Mark Count of Integers completed	Count of Integers	Solve
Mark Design Search Autocomplete System completed	Design Search Autocomplete System	Solve
Mark Find the Duplicate Number completed	Find the Duplicate Number	Solve
Mark Integer to English Words completed	Integer to English Words	Solve
Mark Jump Game completed	Jump Game	Solve
Mark Kth Smallest Element in a BST completed	Kth Smallest Element in a BST	Solve
Mark Largest Rectangle in Histogram completed	Largest Rectangle in Histogram	Solve
Mark Longest Common Subsequence completed	Longest Common Subsequence	Solve
Mark Lowest Common Ancestor of a Binary Tree completed	Lowest Common Ancestor of a Binary Tree	Solve
Mark Merge k Sorted Lists completed	Merge k Sorted Lists	Solve
Mark Minimum Window Substring completed	Minimum Window Substring	Solve
Mark Move Zeroes completed	Move Zeroes	Solve
Mark Palindromic Substrings completed	Palindromic Substrings	Solve
Mark Pascal's Triangle completed	Pascal's Triangle	Solve
Mark Permutations completed	Permutations	Solve
Mark Pow(x, n) completed	Pow(x, n)	Solve
Mark Product of Array Except Self completed	Product of Array Except Self	Solve
Mark Rising Temperature completed	Rising Temperature	Solve
Mark Search in Rotated Sorted Array completed	Search in Rotated Sorted Array	Solve
Mark Search in Rotated Sorted Array II completed	Search in Rotated Sorted Array II	Solve
Mark Sliding Window Maximum completed	Sliding Window Maximum	Solve
Mark Snakes and Ladders completed	Snakes and Ladders	Solve
Mark Sort an Array completed	Sort an Array	Solve
Mark Sort Colors completed	Sort Colors	Solve
Mark Stone Game completed	Stone Game	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 IV - Input is a BST completed	Two Sum IV - Input is a BST	Solve
Mark Valid Palindrome completed	Valid Palindrome	Solve
Mark Validate IP Address completed	Validate IP Address	Solve