ByteDance vs TCS Interview Questions
ByteDance lists 64 LeetCode interview questions while TCS lists 228. They share 30 problems — 47% of ByteDance's bank and 13% of TCS's. Focus on the overlap first, then drill into 34 ByteDance-only and 198 TCS-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 30 overlapping problems first. These are the highest-yield questions for candidates interviewing at both ByteDance and TCS.
Step 2 — Company-specific depth: Add ByteDance-specific problems like Remove Duplicate Letters, Smallest Subsequence of Distinct Characters, First Day Where You Have Been in All the Rooms and TCS-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: ByteDance skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
30 Shared Questions
High-priority problems to practice for both ByteDance and TCS.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Number of Islands | Medium |
| Merge Intervals | Medium |
| House Robber | Medium |
| Regular Expression Matching | Hard |
| Top K Frequent Elements | Medium |
| Two Sum | Easy |
| Word Ladder | Hard |
| Longest Increasing Subsequence | Medium |
| Trapping Rain Water | Hard |
| Search in Rotated Sorted Array | Medium |
| Rotting Oranges | Medium |
| Longest Common Subsequence | Medium |
| Add Two Numbers | Medium |
| Maximum Subarray | Medium |
| Multiply Strings | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Single Element in a Sorted Array | Medium |
| Longest Substring Without Repeating Characters | Medium |
| Climbing Stairs | Easy |
| Subarray Sum Equals K | Medium |
| Subsets | Medium |
| Longest Palindromic Substring | Medium |
| Merge k Sorted Lists | Hard |
| Valid Parentheses | Easy |
| Jump Game | Medium |
| Sliding Window Maximum | Hard |
| 3Sum Closest | Medium |
| Linked List Cycle II | Medium |
| Unique Paths | Medium |
Unique to ByteDance (34)
Problems in ByteDance's list that do not appear at TCS.
| Problem | Difficulty |
|---|---|
| Remove Duplicate Letters | Medium |
| Smallest Subsequence of Distinct Characters | Medium |
| First Day Where You Have Been in All the Rooms | Medium |
| Course Schedule | Medium |
| Combination Sum | Medium |
| Basic Calculator II | Medium |
| Shortest Bridge | Medium |
| Maximal Square | Medium |
| Design Memory Allocator | Medium |
| Combination Sum II | Medium |
| Basic Calculator | Hard |
| Maximum Width of Binary Tree | Medium |
Unique to TCS (198)
Problems in TCS's list that do not appear at ByteDance.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Palindrome Number | Easy |
| Move Zeroes | Easy |
| Majority Element | Easy |
| Longest Common Prefix | 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 |
| Rotate Array | Medium |
| Median of Two Sorted Arrays | Hard |
Frequently Asked Questions
How many LeetCode questions do ByteDance and TCS share?
ByteDance and TCS share 30 LeetCode interview questions. 34 problems appear only in ByteDance's list and 198 appear only in TCS's list.
What topics overlap most between ByteDance and TCS?
The most common shared topics between ByteDance and TCS are Array (17 shared questions), Dynamic Programming (11 shared questions), Hash Table (7 shared questions), String (7 shared questions), Linked List (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: ByteDance or TCS?
ByteDance has 4 Easy, 51 Medium, and 9 Hard questions. TCS has 99 Easy, 108 Medium, and 21 Hard questions. ByteDance has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both ByteDance and TCS?
Start with the 30 shared problems since they cover what both companies ask most often. Then add 20 ByteDance-specific and 20 TCS-specific questions to round out your prep.