All TCS Coding Interview Questions
192 questions we track for TCS, most frequently asked first. Practice any of them in the code editor and get AI feedback on your solution.
- Junior40% (76)
- Mid/Senior51% (97)
- Staff10% (19)
Questionspage 1 of 2
- Two Sum129 companiesJunior
- Add Two Numbers38 companiesMid/Senior
- Longest Substring Without Repeating Characters112 companiesMid/Senior
- Median of Two Sorted Arrays47 companiesStaff
- Longest Palindromic Substring76 companiesMid/Senior
- Zigzag Conversion19 companiesMid/Senior
- Reverse Integer26 companiesMid/Senior
- String to Integer (atoi)19 companiesMid/Senior
- Palindrome Number35 companiesJunior
- Regular Expression Matching27 companiesStaff
- Container With Most Water58 companiesMid/Senior
- Integer to Roman32 companiesMid/Senior
- Roman to Integer45 companiesJunior
- Longest Common Prefix57 companiesJunior
- 3Sum61 companiesMid/Senior
- 3Sum Closest11 companiesMid/Senior
- Letter Combinations of a Phone Number40 companiesMid/Senior
- 4Sum19 companiesMid/Senior
- Remove Nth Node From End of List19 companiesMid/Senior
- Valid Parentheses119 companiesJunior
- Merge Two Sorted Lists40 companiesJunior
- Generate Parentheses40 companiesMid/Senior
- Merge k Sorted Lists53 companiesStaff
- Find the Index of the First Occurrence in a String17 companiesJunior
- Next Permutation31 companiesMid/Senior
- Search in Rotated Sorted Array55 companiesMid/Senior
- Find First and Last Position of Element in Sorted Array31 companiesMid/Senior
- Search Insert Position14 companiesJunior
- Count and Say13 companiesMid/Senior
- Combination Sum30 companiesMid/Senior
- First Missing Positive35 companiesStaff
- Trapping Rain Water78 companiesStaff
- Jump Game II28 companiesMid/Senior
- Rotate Image37 companiesMid/Senior
- Group Anagrams91 companiesMid/Senior
- Pow(x, n)23 companiesMid/Senior
- N-Queens16 companiesStaff
- Maximum Subarray66 companiesMid/Senior
- Spiral Matrix53 companiesMid/Senior
- Jump Game34 companiesMid/Senior
- Merge Intervals109 companiesMid/Senior
- Length of Last Word8 companiesJunior
- Rotate List12 companiesMid/Senior
- Unique Paths22 companiesMid/Senior
- Unique Paths II12 companiesMid/Senior
- Plus One14 companiesJunior
- Add Binary13 companiesJunior
- Sqrt(x)19 companiesJunior
- Climbing Stairs38 companiesJunior
- Edit Distance31 companiesMid/Senior
- Set Matrix Zeroes24 companiesMid/Senior
- Search a 2D Matrix19 companiesMid/Senior
- Sort Colors37 companiesMid/Senior
- Subsets20 companiesMid/Senior
- Word Search40 companiesMid/Senior
- Remove Duplicates from Sorted Array II12 companiesMid/Senior
- Search in Rotated Sorted Array II10 companiesMid/Senior
- Remove Duplicates from Sorted List10 companiesJunior
- Largest Rectangle in Histogram32 companiesStaff
- Maximal Rectangle21 companiesStaff
- Merge Sorted Array38 companiesJunior
- Subsets II9 companiesMid/Senior
- Binary Tree Inorder Traversal6 companiesJunior
- Convert Sorted List to Binary Search Tree9 companiesMid/Senior
- Pascal's Triangle18 companiesJunior
- Best Time to Buy and Sell Stock90 companiesJunior
- Best Time to Buy and Sell Stock II28 companiesMid/Senior
- Binary Tree Maximum Path Sum23 companiesStaff
- Valid Palindrome44 companiesJunior
- Word Ladder40 companiesStaff
- Longest Consecutive Sequence40 companiesMid/Senior
- Single Number15 companiesJunior
- Linked List Cycle25 companiesJunior
- Reorder List16 companiesMid/Senior
- Reverse Words in a String29 companiesMid/Senior
- Maximum Product Subarray25 companiesMid/Senior
- Find Minimum in Rotated Sorted Array17 companiesMid/Senior
- Find Peak Element34 companiesMid/Senior
- Maximum Gap7 companiesMid/Senior
- Two Sum II - Input Array Is Sorted17 companiesMid/Senior
- Majority Element22 companiesJunior
- Factorial Trailing Zeroes6 companiesMid/Senior
- Largest Number22 companiesMid/Senior
- Rotate Array28 companiesMid/Senior
- House Robber38 companiesMid/Senior
- Number of Islands81 companiesMid/Senior
- Happy Number27 companiesJunior
- Count Primes17 companiesMid/Senior
- Reverse Linked List34 companiesJunior
- Minimum Size Subarray Sum18 companiesMid/Senior
- Contains Duplicate21 companiesJunior
- Contains Duplicate II14 companiesJunior
- Majority Element II10 companiesMid/Senior
- Power of Two11 companiesJunior
- Product of Array Except Self44 companiesMid/Senior
- Sliding Window Maximum46 companiesStaff
- Valid Anagram38 companiesJunior
- Ugly Number7 companiesJunior
- Missing Number19 companiesJunior
- Integer to English Words23 companiesStaff