Walmart Labs vs X Interview Questions
Walmart Labs lists 144 LeetCode interview questions while X lists 51. They share 9 problems — 6% of Walmart Labs's bank and 18% of X's. Focus on the overlap first, then drill into 135 Walmart Labs-only and 42 X-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 9 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Walmart Labs and X.
Step 2 — Company-specific depth: Add Walmart Labs-specific problems like Number of Islands, Longest Substring Without Repeating Characters, Two Sum and X-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: X skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
9 Shared Questions
High-priority problems to practice for both Walmart Labs and X.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Valid Parentheses | Easy |
| Trapping Rain Water | Hard |
| Merge Intervals | Medium |
| Merge k Sorted Lists | Hard |
| Trapping Rain Water II | Hard |
| Integer to Roman | Medium |
| Wildcard Matching | Hard |
| Flatten Nested List Iterator | Medium |
Unique to Walmart Labs (135)
Problems in Walmart Labs's list that do not appear at X.
Unique to X (42)
Problems in X's list that do not appear at Walmart Labs.
| Problem | Difficulty |
|---|---|
| Tweet Counts Per Frequency | Medium |
| Implement Trie (Prefix Tree) | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Design Twitter | Medium |
| Binary Gap | Easy |
| Regular Expression Matching | Hard |
| Word Break II | Hard |
| Alien Dictionary | Hard |
| Time Needed to Buy Tickets | Easy |
| Max Points on a Line | Hard |
| Finding the Users Active Minutes | Medium |
| One Edit Distance | Medium |
Frequently Asked Questions
How many LeetCode questions do Walmart Labs and X share?
Walmart Labs and X share 9 LeetCode interview questions. 135 problems appear only in Walmart Labs's list and 42 appear only in X's list.
What topics overlap most between Walmart Labs and X?
The most common shared topics between Walmart Labs and X are String (3 shared questions), Stack (3 shared questions), Array (3 shared questions), Hash Table (2 shared questions), Linked List (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Walmart Labs or X?
Walmart Labs has 22 Easy, 96 Medium, and 26 Hard questions. X has 8 Easy, 31 Medium, and 12 Hard questions. X has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Walmart Labs and X?
Start with the 9 shared problems since they cover what both companies ask most often. Then add 20 Walmart Labs-specific and 20 X-specific questions to round out your prep.