Amazon vs TCS Interview Questions
Amazon lists 1,968 LeetCode interview questions while TCS lists 228. They share 221 problems — 11% of Amazon's bank and 97% of TCS's. Focus on the overlap first, then drill into 1,747 Amazon-only and 7 TCS-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 221 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Amazon and TCS.
Step 2 — Company-specific depth: Add Amazon-specific problems like Reorganize String, Course Schedule, Copy List with Random Pointer and TCS-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Amazon skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
221 Shared Questions
High-priority problems to practice for both Amazon and TCS.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| LRU Cache | Medium |
| Trapping Rain Water | Hard |
| Number of Islands | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Group Anagrams | Medium |
| Add Two Numbers | Medium |
| 3Sum | Medium |
| Longest Palindromic Substring | Medium |
| Merge Intervals | Medium |
| Container With Most Water | Medium |
| Median of Two Sorted Arrays | Hard |
| Koko Eating Bananas | Medium |
| Valid Parentheses | Easy |
| Merge k Sorted Lists | Hard |
| Longest Common Prefix | Easy |
| Rotting Oranges | Medium |
| Subarray Sum Equals K | Medium |
| Merge Sorted Array | Easy |
| Search in Rotated Sorted Array | Medium |
| Top K Frequent Elements | Medium |
| Maximum Subarray | Medium |
| Longest Consecutive Sequence | Medium |
| Generate Parentheses | Medium |
| Palindrome Number | Easy |
| Word Ladder | Hard |
| Majority Element | Easy |
| Product of Array Except Self | Medium |
| Merge Two Sorted Lists | Easy |
Showing top 30 of 221 shared problems.
Unique to Amazon (1,747)
Problems in Amazon's list that do not appear at TCS.
| Problem | Difficulty |
|---|---|
| Reorganize String | Medium |
| Course Schedule | Medium |
| Copy List with Random Pointer | Medium |
| Lowest Common Ancestor of a Binary Tree | Medium |
| Course Schedule II | Medium |
| Word Search | Medium |
| Analyze User Website Visit Pattern | Medium |
| Coin Change | Medium |
| Kth Largest Element in an Array | Medium |
| Meeting Rooms II | Medium |
| Find Median from Data Stream | Hard |
| Merge Strings Alternately | Easy |
Unique to TCS (7)
Problems in TCS's list that do not appear at Amazon.
Frequently Asked Questions
How many LeetCode questions do Amazon and TCS share?
Amazon and TCS share 221 LeetCode interview questions. 1747 problems appear only in Amazon's list and 7 appear only in TCS's list.
What topics overlap most between Amazon and TCS?
The most common shared topics between Amazon and TCS are Array (20 shared questions), Hash Table (9 shared questions), String (7 shared questions), Sorting (6 shared questions), Two Pointers (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Amazon or TCS?
Amazon has 527 Easy, 1074 Medium, and 367 Hard questions. TCS has 99 Easy, 108 Medium, and 21 Hard questions. Amazon has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Amazon and TCS?
Start with the 221 shared problems since they cover what both companies ask most often. Then add 20 Amazon-specific and 7 TCS-specific questions to round out your prep.