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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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Hot
6. Two Sum
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Very Hot
7. Valid Parentheses
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Very Hot
8. Majority Element
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Hot
9. Best Time to Buy and Sell Stock
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Very Hot
10. Valid Anagram
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Hot
11. Longest Common Prefix
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Hot
12. Missing Number
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Hot
13. Single Number
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Very Hot
14. Reverse Linked List
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Very Hot
15. Merge Two Sorted Lists
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Hot
16. Pascal's Triangle
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17. Search Insert Position
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18. Contains Duplicate
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Very Hot
19. Binary Search
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Very Hot
20. Find the Index of the First Occurrence in a String
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Hot
21. Search a 2D Matrix
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Very Hot
22. Container With Most Water
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Hot
23. Product of Array Except Self
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24. Subarray Sum Equals K
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Hot
25. Group Anagrams
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Warm
26. Longest Substring Without Repeating Characters
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Very Hot
27. Number of Islands
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Very Hot
28. Rotting Oranges
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Very Hot
29. Spiral Matrix
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Hot
30. Sort Colors
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Hot
31. Coin Change
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Very Hot
32. House Robber
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33. Longest Consecutive Sequence
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Hot
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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Hot
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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Hot
49. Search in Rotated Sorted Array
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Very Hot
50. Is Subsequence
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Hot
51. Find Peak Element
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52. Shortest Path in a Binary Maze
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Hot
53. Count Primes
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Very Hot
54. Maximum Product Subarray
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Hot
55. Longest Palindromic Substring
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Very Hot
56. Valid Sudoku
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Hot
57. Jump Game
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Very Hot
58. Kth Smallest Element in a BST
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Hot
59. Unique Paths
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Hot
60. Set Matrix Zeroes
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Hot
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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Hot
69. Network Delay Time
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Warm
70. Generate Parentheses
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Hot
71. Minimum Path Sum
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Hot
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