TCS vs Walmart Labs Interview Questions
TCS lists 228 LeetCode interview questions while Walmart Labs lists 144. They share 66 problems — 29% of TCS's bank and 46% of Walmart Labs's. Focus on the overlap first, then drill into 162 TCS-only and 78 Walmart Labs-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 66 overlapping problems first. These are the highest-yield questions for candidates interviewing at both TCS and Walmart Labs.
Step 2 — Company-specific depth: Add TCS-specific problems like Friday Purchases I, Palindrome Number, Majority Element and Walmart Labs-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Walmart Labs skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
66 Shared Questions
High-priority problems to practice for both TCS and Walmart Labs.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Longest Palindromic Substring | Medium |
| Maximum Subarray | Medium |
| Move Zeroes | Easy |
| Longest Common Prefix | Easy |
| Best Time to Buy and Sell Stock | Easy |
| Sort Colors | Medium |
| Valid Parentheses | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Subarray Sum Equals K | Medium |
| Rotate Array | Medium |
| Median of Two Sorted Arrays | Hard |
| Container With Most Water | Medium |
| Remove Duplicates from Sorted Array | Easy |
| 3Sum | Medium |
| Reverse Integer | Medium |
| Jump Game | Medium |
| Remove Letter To Equalize Frequency | Easy |
| Maximum Product Subarray | Medium |
| Valid Palindrome | Easy |
| Spiral Matrix | Medium |
| First Unique Character in a String | Easy |
| Trapping Rain Water | Hard |
| Pow(x, n) | Medium |
| Search in Rotated Sorted Array | Medium |
| Merge Intervals | Medium |
| Roman to Integer | Easy |
| Add Binary | Easy |
| House Robber | Medium |
| Find the Duplicate Number | Medium |
Showing top 30 of 66 shared problems.
Unique to TCS (162)
Problems in TCS's list that do not appear at Walmart Labs.
| Problem | Difficulty |
|---|---|
| Friday Purchases I | Medium |
| Palindrome Number | Easy |
| Majority Element | Easy |
| Valid Anagram | Easy |
| Find the Index of the First Occurrence in a String | Easy |
| Single Number | Easy |
| Second Highest Salary | Medium |
| Contains Duplicate | Easy |
| Maximum Ascending Subarray Sum | Easy |
| Count the Digits That Divide a Number | Easy |
| Reverse String | Easy |
| Task Scheduler | Medium |
Unique to Walmart Labs (78)
Problems in Walmart Labs's list that do not appear at TCS.
Frequently Asked Questions
How many LeetCode questions do TCS and Walmart Labs share?
TCS and Walmart Labs share 66 LeetCode interview questions. 162 problems appear only in TCS's list and 78 appear only in Walmart Labs's list.
What topics overlap most between TCS and Walmart Labs?
The most common shared topics between TCS and Walmart Labs are Array (20 shared questions), Two Pointers (10 shared questions), String (9 shared questions), Dynamic Programming (7 shared questions), Hash Table (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: TCS or Walmart Labs?
TCS has 99 Easy, 108 Medium, and 21 Hard questions. Walmart Labs has 22 Easy, 96 Medium, and 26 Hard questions. Walmart Labs has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both TCS and Walmart Labs?
Start with the 66 shared problems since they cover what both companies ask most often. Then add 20 TCS-specific and 20 Walmart Labs-specific questions to round out your prep.