TCS vs Yandex Interview Questions
TCS lists 228 LeetCode interview questions while Yandex lists 128. They share 63 problems — 28% of TCS's bank and 49% of Yandex's. Focus on the overlap first, then drill into 165 TCS-only and 65 Yandex-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 63 overlapping problems first. These are the highest-yield questions for candidates interviewing at both TCS and Yandex.
Step 2 — Company-specific depth: Add TCS-specific problems like Friday Purchases I, Longest Common Prefix, Sort Colors and Yandex-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: TCS skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
63 Shared Questions
High-priority problems to practice for both TCS and Yandex.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Palindromic Substring | Medium |
| Palindrome Number | Easy |
| Maximum Subarray | Medium |
| Move Zeroes | Easy |
| Majority Element | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Valid Anagram | Easy |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Subarray Sum Equals K | Medium |
| Median of Two Sorted Arrays | Hard |
| Container With Most Water | Medium |
| Remove Duplicates from Sorted Array | Easy |
| Reverse Integer | Medium |
| Valid Palindrome | Easy |
| Spiral Matrix | Medium |
| First Unique Character in a String | Easy |
| Trapping Rain Water | Hard |
| Merge Sorted Array | Easy |
| Search in Rotated Sorted Array | Medium |
| Merge Intervals | Medium |
| Employees Earning More Than Their Managers | Easy |
| Search Insert Position | Easy |
| Add Binary | Easy |
| Squares of a Sorted Array | Easy |
| Add Two Numbers | Medium |
| Generate Parentheses | Medium |
| Remove Nth Node From End of List | Medium |
| 4Sum | Medium |
Showing top 30 of 63 shared problems.
Unique to TCS (165)
Problems in TCS's list that do not appear at Yandex.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Longest Common Prefix | Easy |
| Sort Colors | Medium |
| Find the Index of the First Occurrence in a String | Easy |
| Single Number | Easy |
| Second Highest Salary | Medium |
| Rotate Array | Medium |
| 3Sum | Medium |
| Jump Game | Medium |
| Contains Duplicate | Easy |
| Remove Letter To Equalize Frequency | Easy |
| Maximum Ascending Subarray Sum | Easy |
Unique to Yandex (65)
Problems in Yandex's list that do not appear at TCS.
Frequently Asked Questions
How many LeetCode questions do TCS and Yandex share?
TCS and Yandex share 63 LeetCode interview questions. 165 problems appear only in TCS's list and 65 appear only in Yandex's list.
What topics overlap most between TCS and Yandex?
The most common shared topics between TCS and Yandex are Array (17 shared questions), Two Pointers (10 shared questions), String (8 shared questions), Hash Table (6 shared questions), Sorting (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: TCS or Yandex?
TCS has 99 Easy, 108 Medium, and 21 Hard questions. Yandex has 51 Easy, 67 Medium, and 10 Hard questions. TCS has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both TCS and Yandex?
Start with the 63 shared problems since they cover what both companies ask most often. Then add 20 TCS-specific and 20 Yandex-specific questions to round out your prep.