Home / Company interviews / TCS · Updated August 2026

TCS interview questions and practice

giveinterview has mock interviews built from 5 TCS job posts since August 2026, 5 of them still open. Each practice interview runs the loop below: a 10-minute voice screen, then 2 rounds (coding, then behavioral). The topics that come up most are CMake, GDB, Modern C++ (11/14/17), multithreading, Object-Oriented Design. 247 coding questions are known to come up in TCS interviews (110 easy, 113 medium, 24 hard), 92 of them in the last six months. The most common topics are Array, Hash Table, String, Sorting.

Practice interviews built from public job posts and question lists. Each open post links to the original so you can apply on TCS’s own site; TCS does not run, see or review your practice.

Start a full TCS mock interview →Add TCS to my plan Or one question first · 2 min

5Job posts to practise

5Posts still open

3Steps in a practice loop

100 minTypical total length

How the TCS practice interview runs

The most common loop across the mock interviews built from TCS job posts.

ScreenVoice screen10 min
Round 1Coding45 min
Round 2Behavioral45 min

What TCS interviews cover

Skills and topics, with the number of TCS job posts that list each one.

CMake5
GDB5
Modern C++ (11/14/17)5
multithreading5
Object-Oriented Design5
Perf5
STL5
Valgrind5
Data Structures & Algorithms4
Algorithms1
Data Structures1
GCC1

Coding questions TCS asks

From public company-tagged interview question lists. Most recent and most frequent first.

Easy 110Medium 113Hard 24

Array134
Hash Table51
String45
Sorting41
Two Pointers38
Math38
Dynamic Programming33
Binary Search26
Linked List19
Stack17
Database16
Greedy15

Question	Difficulty	Asked recently
Two Sum	Easy	Yes
Longest Palindromic Substring	Medium	Yes
Palindrome Number	Easy	Yes
Maximum Subarray	Medium	Yes
Move Zeroes	Easy	Yes
Container With Most Water	Medium	Yes
Best Time to Buy and Sell Stock	Easy	Yes
Longest Common Prefix	Easy	Yes
Rank Transform of an Array	Easy	Yes
Valid Anagram	Easy	Yes
Second Highest Salary	Medium	Yes
First Missing Positive	Hard	Yes
Valid Parentheses	Easy	Yes
3Sum	Medium	Yes
Roman to Integer	Easy	Yes
Longest Substring Without Repeating Characters	Medium	Yes
Fibonacci Number	Easy	Yes
Reverse String	Easy	Yes
Single Number	Easy	Yes
Sort Colors	Medium	Yes
Find the Index of the First Occurrence in a String	Easy	Yes
Remove Duplicates from Sorted Array	Easy	Yes
Integer to Roman	Medium	Yes
Merge Sorted Array	Easy	Yes
Reverse Integer	Medium	Yes

TCS job posts you can practise for

Open a post to practise its interview and get the link to apply on TCS’s site.

Role	Where	Steps	Job post
Software Engineer	On-site · Hyderabad, Telangana, India	3	Open	Practise Add to plan

Questions about TCS interviews

How many rounds are in a TCS interview?

The mock interviews built from TCS job posts usually run a 10-minute voice screen, then 2 rounds (coding, then behavioral), about 100 minutes in all.

What topics do TCS interviews cover?

The ones that come up most are CMake, GDB, Modern C++ (11/14/17), multithreading, Object-Oriented Design.

What coding questions does TCS ask?

247 questions are tagged to TCS in public interview lists: 110 easy, 113 medium and 24 hard. The most asked include Two Sum, Longest Palindromic Substring, Palindrome Number.

How do I practise a TCS interview?

Answer a 2-minute question for free, then take a mock interview with an AI interviewer, voice and live coding. You get a review that marks the exact line that cost you. The screen and Round 1 of your first role interview are free.

Practise a TCS interview before it counts.

Talk it through while you code, and get a review that marks the exact line that cost you. Free to start.

Start a full TCS mock interview →Add TCS to my plan