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TCS interview questions (last 180 days) · FAANGrind

TCS

ServiceIndian Last 180 days

Tata Consultancy Services is India's largest IT services and consulting company, delivering engineering, digital and operations services worldwide.

Est. 1968 100,001+ employees

Problems: 98
Window: 180d
Topics: 6

98 problems

TopicsLinks

1

1.Fibonacci Number

Easy12 co.

Easy

Dynamic Programming

also at 11 more

2

2.Palindrome Number

Easy21 co.

Easy

also at 20 more

3

3.Longest Consecutive Sequence in an Array

Medium37 co.

Medium

also at 36 more

4

4.Climbing stairs

Medium24 co.

Medium

Dynamic Programming

also at 23 more

5

5.Daily Temperatures

Medium21 co.

Medium

also at 20 more

6

6.Find peak element

Medium28 co.

Medium

also at 27 more

7

7.Diameter of Binary Tree

Medium22 co.

Medium

also at 21 more

8

8.Check if two trees are identical or not

Medium7 co.

Medium

also at 6 more

9

9.Longest Common Prefix

Medium26 co.

Medium

also at 25 more

10

10.Longest palindromic subsequence

Medium15 co.

Medium

Dynamic Programming

also at 14 more

11

11.Two Sum II - Input Array Is Sorted

Medium12 co.

Medium

also at 11 more

12

12.Longest Palindromic Substring

Medium40 co.

Medium

Strings Dynamic Programming

also at 39 more

13

13.Integer to Roman

Medium16 co.

Medium

also at 15 more

14

14.Task Scheduler

Medium17 co.

Medium

Heaps Greedy Algorithms

also at 16 more

15

15.Reverse Integer

Medium15 co.

Medium

also at 14 more

16

16.Permutation in String

Medium10 co.

Medium

also at 9 more

17

17.Isomorphic Strings

Easy15 co.

Easy

also at 14 more

18

18.Count Odd Numbers in an Interval Range

Easy1 co.

Easy

also at 0 more

19

Medium42 co.

Medium

also at 41 more

20

20.Largest rectangle in a histogram

Hard30 co.

Hard

also at 29 more

21

21.Minimum Number of Operations to Reinitialize a Permutation

Medium1 co.

Medium

also at 0 more

22

22.Remove Element

Easy8 co.

Easy

also at 7 more

23

Easy58 co.

Easy

also at 57 more

24

24.Lemonade Change

Medium5 co.

Medium

Greedy Algorithms

also at 4 more

25

25.Reverse a LL

Medium30 co.

Medium

also at 29 more

26

26.Boats to Save People

Medium6 co.

Medium

Greedy Algorithms

also at 5 more

27

27.First and last occurrence

Medium18 co.

Medium

also at 17 more

28

28.Kth Smallest and Largest element in BST

Medium13 co.

Medium

Binary Search Trees

also at 12 more

29

29.Toeplitz Matrix

Easy1 co.

Easy

also at 0 more

30

30.Maximum Depth in BT

Easy16 co.

Easy

also at 15 more

31

31.Top K Frequent Words

Medium7 co.

Medium

also at 6 more

32

32.Find Missing Elements

Easy2 co.

Easy

also at 1 more

33

33.Single element in sorted array

Medium23 co.

Medium

also at 22 more

34

34.Top K Frequent Elements

Medium33 co.

Medium

also at 32 more

35

35.String to Integer (atoi)

Medium15 co.

Medium

also at 14 more

36

36.Contains Duplicate II

Easy11 co.

Easy

also at 10 more

37

37.Trapping Rainwater

Medium48 co.

Medium

also at 47 more

38

38.Vertical Order Traversal

Medium12 co.

Medium

also at 11 more

39

39.Maximum Average Subarray I

Easy9 co.

Easy

also at 8 more

40

40.Reverse a String I

Easy16 co.

Easy

also at 15 more

41

41.Find the Peaks

Easy1 co.

Easy

Recursion & Backtracking

also at 0 more

42

42.Merge two sorted arrays without extra space

Medium33 co.

Medium

also at 32 more

43

43.Remove Outermost Parentheses

Medium8 co.

Medium

Strings Stack & Queues

also at 7 more

44

44.Swap Nodes in Pairs

Medium7 co.

Medium

also at 6 more

45

45.Smallest Range Covering Elements from K Lists

Hard3 co.

Hard

also at 2 more

46

46.Median of 2 sorted arrays

Hard34 co.

Hard

also at 33 more

47

47.Check if LL is palindrome or not

Medium18 co.

Medium

also at 17 more

48

Medium19 co.

Medium

also at 18 more

49

49.Roman to Integer

Easy23 co.

Easy

also at 22 more

50

50.Letter Combinations of a Phone Number

Medium34 co.

Medium

Recursion & Backtracking

also at 33 more

Showing 1–50 of 98

Difficulty split

Easy31(32%)
Medium63(64%)
Hard4(4%)

Top topics

Arrays19
Hashing11
Binary Search10
Stack & Queues8
Greedy Algorithms7
Dynamic Programming7