Snapchat vs TCS Interview Questions
Snapchat lists 99 LeetCode interview questions while TCS lists 228. They share 24 problems — 24% of Snapchat's bank and 11% of TCS's. Focus on the overlap first, then drill into 75 Snapchat-only and 204 TCS-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 24 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Snapchat and TCS.
Step 2 — Company-specific depth: Add Snapchat-specific problems like Meeting Rooms II, Valid Sudoku, Sudoku Solver and TCS-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Snapchat skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
24 Shared Questions
High-priority problems to practice for both Snapchat and TCS.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Word Ladder | Hard |
| Reverse Words in a String | Medium |
| Min Stack | Medium |
| Number of Islands | Medium |
| Reverse Linked List | Easy |
| Burst Balloons | Hard |
| String Compression | Medium |
| Merge Intervals | Medium |
| Top K Frequent Elements | Medium |
| Median of Two Sorted Arrays | Hard |
| Power of Two | Easy |
| Product of Array Except Self | Medium |
| Reorder List | Medium |
| Binary Tree Maximum Path Sum | Hard |
| Group Anagrams | Medium |
| Search in Rotated Sorted Array | Medium |
| Letter Combinations of a Phone Number | Medium |
| Add Binary | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Koko Eating Bananas | Medium |
| Maximum Swap | Medium |
| Task Scheduler | Medium |
Unique to Snapchat (75)
Problems in Snapchat's list that do not appear at TCS.
| Problem | Difficulty |
|---|---|
| Meeting Rooms II | Medium |
| Valid Sudoku | Medium |
| Sudoku Solver | Hard |
| Combination Sum | Medium |
| Combination Sum II | Medium |
| Wildcard Matching | Hard |
| Minimum Window Substring | Hard |
| Unique Binary Search Trees | Medium |
| Word Break II | Hard |
| One Edit Distance | Medium |
| Basic Calculator II | Medium |
| Alien Dictionary | Hard |
Unique to TCS (204)
Problems in TCS's list that do not appear at Snapchat.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Two Sum | Easy |
| Longest Palindromic Substring | Medium |
| Palindrome Number | Easy |
| Maximum Subarray | Medium |
| 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 |
Frequently Asked Questions
How many LeetCode questions do Snapchat and TCS share?
Snapchat and TCS share 24 LeetCode interview questions. 75 problems appear only in Snapchat's list and 204 appear only in TCS's list.
What topics overlap most between Snapchat and TCS?
The most common shared topics between Snapchat and TCS are Array (11 shared questions), Hash Table (7 shared questions), String (7 shared questions), Sorting (4 shared questions), Linked List (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Snapchat or TCS?
Snapchat has 6 Easy, 62 Medium, and 31 Hard questions. TCS has 99 Easy, 108 Medium, and 21 Hard questions. Snapchat has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Snapchat and TCS?
Start with the 24 shared problems since they cover what both companies ask most often. Then add 20 Snapchat-specific and 20 TCS-specific questions to round out your prep.