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TCS + TCS NQT DSA Interview Questions

Master the TCS recruitment pipeline with this comprehensive, high-yield preparation sheet featuring 75 highly recurring coding questions aggregated from recent TCS NQT, Digital, and Prime hiring assessments. The dataset spans from basic numerical and logical automation (crucial for passing the mandatory NQT sections) to advanced algorithmic designs required for Digital and Prime bands. Use this verified production-grade dataset—fully shuffled and equipped with active LeetCode and GeeksforGeeks links—to scale traffic, organic indexing, and structural candidate prep on your platform.

75 Problems
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Overall Progress

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1. Fizz Buzz
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Hot
2. Climbing Stairs
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Very Hot
3. Valid Palindrome
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Very Hot
4. Maximum Subarray
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Very Hot
5. Fibonacci Number
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6. Two Sum
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7. Valid Parentheses
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8. Majority Element
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9. Best Time to Buy and Sell Stock
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10. Valid Anagram
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11. Longest Common Prefix
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12. Missing Number
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13. Single Number
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14. Reverse Linked List
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15. Merge Two Sorted Lists
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16. Pascal's Triangle
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17. Search Insert Position
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18. Contains Duplicate
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19. Binary Search
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20. Find the Index of the First Occurrence in a String
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21. Search a 2D Matrix
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Very Hot
22. Container With Most Water
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23. Product of Array Except Self
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24. Subarray Sum Equals K
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25. Group Anagrams
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Warm
26. Longest Substring Without Repeating Characters
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27. Number of Islands
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28. Rotting Oranges
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29. Spiral Matrix
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30. Sort Colors
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31. Coin Change
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32. House Robber
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33. Longest Consecutive Sequence
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34. Word Break
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Warm
35. Permutations
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Warm
36. Subsets
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Warm
37. 3Sum
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38. Min Stack
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39. Merge Intervals
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40. Meeting Rooms
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41. Check if a Binary Tree is BST
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42. Lowest Common Ancestor of a Binary Tree
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43. Maximum Depth of Binary Tree
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44. Inorder Traversal of Binary Tree
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Warm
45. Symmetric Tree
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Warm
46. Gas Station
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Warm
47. Next Permutation
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Warm
48. Find the Duplicate Number
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49. Search in Rotated Sorted Array
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50. Is Subsequence
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51. Find Peak Element
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52. Shortest Path in a Binary Maze
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53. Count Primes
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Very Hot
54. Maximum Product Subarray
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55. Longest Palindromic Substring
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Very Hot
56. Valid Sudoku
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57. Jump Game
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Very Hot
58. Kth Smallest Element in a BST
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59. Unique Paths
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60. Set Matrix Zeroes
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61. Word Search
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Warm
62. Rotate Image
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Hot
63. Remove Duplicates from Sorted Array
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Very Hot
64. Implement Queue using Stacks
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Warm
65. Flatten Binary Tree to Linked List
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Warm
66. Binary Tree Zigzag Level Order Traversal
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Hot
67. Longest Palindromic Subsequence
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Warm
68. Edit Distance
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69. Network Delay Time
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Warm
70. Generate Parentheses
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71. Minimum Path Sum
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72. Excel Sheet Column Number
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Warm
73. Knapsack Problem (0/1 standard archetype)
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Very Hot
74. Armstrong Numbers
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Very Hot
75. Find Nth element of dynamic series (Simulation)
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Very Hot