TCS vs Tesla Interview Questions
TCS lists 228 LeetCode interview questions while Tesla lists 41. They share 20 problems — 9% of TCS's bank and 49% of Tesla's. Focus on the overlap first, then drill into 208 TCS-only and 21 Tesla-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 20 overlapping problems first. These are the highest-yield questions for candidates interviewing at both TCS and Tesla.
Step 2 — Company-specific depth: Add TCS-specific problems like Friday Purchases I, Longest Palindromic Substring, Palindrome Number and Tesla-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Tesla skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
20 Shared Questions
High-priority problems to practice for both TCS and Tesla.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Maximum Subarray | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Valid Anagram | Easy |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Median of Two Sorted Arrays | Hard |
| Container With Most Water | Medium |
| 3Sum | Medium |
| Trapping Rain Water | Hard |
| Merge Intervals | Medium |
| Happy Number | Easy |
| Letter Combinations of a Phone Number | Medium |
| First Missing Positive | Hard |
| LRU Cache | Medium |
| Top K Frequent Elements | Medium |
| Longest Consecutive Sequence | Medium |
| Rotate Image | Medium |
| Number of Islands | Medium |
| Word Ladder | Hard |
Unique to TCS (208)
Problems in TCS's list that do not appear at Tesla.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Longest Palindromic Substring | Medium |
| Palindrome Number | Easy |
| Move Zeroes | Easy |
| Majority Element | Easy |
| 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 |
| Subarray Sum Equals K | Medium |
| Rotate Array | Medium |
Unique to Tesla (21)
Problems in Tesla's list that do not appear at TCS.
| Problem | Difficulty |
|---|---|
| Minimum Changes To Make Alternating Binary String | Easy |
| Find Followers Count | Easy |
| Basic Calculator II | Medium |
| Building H2O | Medium |
| Design Circular Queue | Medium |
| Reorganize String | Medium |
| Rectangle Area | Medium |
| Snakes and Ladders | Medium |
| Evaluate Division | Medium |
| Shortest Bridge | Medium |
| Design Memory Allocator | Medium |
| Flatten Nested List Iterator | Medium |
Frequently Asked Questions
How many LeetCode questions do TCS and Tesla share?
TCS and Tesla share 20 LeetCode interview questions. 208 problems appear only in TCS's list and 21 appear only in Tesla's list.
What topics overlap most between TCS and Tesla?
The most common shared topics between TCS and Tesla are Array (13 shared questions), Hash Table (10 shared questions), String (5 shared questions), Sorting (4 shared questions), Two Pointers (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: TCS or Tesla?
TCS has 99 Easy, 108 Medium, and 21 Hard questions. Tesla has 10 Easy, 26 Medium, and 5 Hard questions. Tesla has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both TCS and Tesla?
Start with the 20 shared problems since they cover what both companies ask most often. Then add 20 TCS-specific and 20 Tesla-specific questions to round out your prep.