TCS vs Yahoo Interview Questions
TCS lists 228 LeetCode interview questions while Yahoo lists 34. They share 16 problems — 7% of TCS's bank and 47% of Yahoo's. Focus on the overlap first, then drill into 212 TCS-only and 18 Yahoo-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 16 overlapping problems first. These are the highest-yield questions for candidates interviewing at both TCS and Yahoo.
Step 2 — Company-specific depth: Add TCS-specific problems like Friday Purchases I, Longest Palindromic Substring, Maximum Subarray and Yahoo-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
16 Shared Questions
High-priority problems to practice for both TCS and Yahoo.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Palindrome Number | Easy |
| Longest Common Prefix | Easy |
| Valid Parentheses | Easy |
| Subarray Sum Equals K | Medium |
| Median of Two Sorted Arrays | Hard |
| Contains Duplicate | Easy |
| Spiral Matrix | Medium |
| Search in Rotated Sorted Array | Medium |
| Roman to Integer | Easy |
| Serialize and Deserialize Binary Tree | Hard |
| LRU Cache | Medium |
| Maximum Depth of Binary Tree | Easy |
| Top K Frequent Elements | Medium |
| Reverse Linked List | Easy |
| Linked List Cycle | Easy |
Unique to TCS (212)
Problems in TCS's list that do not appear at Yahoo.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Longest Palindromic Substring | Medium |
| Maximum Subarray | Medium |
| Move Zeroes | Easy |
| Majority Element | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Sort Colors | Medium |
| Valid Anagram | Easy |
| Find the Index of the First Occurrence in a String | Easy |
| Single Number | Easy |
| Second Highest Salary | Medium |
| Longest Substring Without Repeating Characters | Medium |
Unique to Yahoo (18)
Problems in Yahoo's list that do not appear at TCS.
| Problem | Difficulty |
|---|---|
| Largest Palindrome Product | Hard |
| Word Break | Medium |
| Matrix Cells in Distance Order | Easy |
| Non-decreasing Subsequences | Medium |
| Maximum Distance in Arrays | Medium |
| Binary Number with Alternating Bits | Easy |
| Peeking Iterator | Medium |
| Combination Sum | Medium |
| Meeting Rooms II | Medium |
| Validate Binary Search Tree | Medium |
| Longest Repeating Character Replacement | Medium |
| Shortest Path in Binary Matrix | Medium |
Frequently Asked Questions
How many LeetCode questions do TCS and Yahoo share?
TCS and Yahoo share 16 LeetCode interview questions. 212 problems appear only in TCS's list and 18 appear only in Yahoo's list.
What topics overlap most between TCS and Yahoo?
The most common shared topics between TCS and Yahoo are Array (8 shared questions), Hash Table (7 shared questions), String (4 shared questions), Linked List (3 shared questions), Math (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: TCS or Yahoo?
TCS has 99 Easy, 108 Medium, and 21 Hard questions. Yahoo has 11 Easy, 20 Medium, and 3 Hard questions. TCS has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both TCS and Yahoo?
Start with the 16 shared problems since they cover what both companies ask most often. Then add 20 TCS-specific and 18 Yahoo-specific questions to round out your prep.