Twitter vs Walmart Labs Interview Questions
Twitter lists 53 LeetCode interview questions while Walmart Labs lists 144. They share 10 problems — 19% of Twitter's bank and 7% of Walmart Labs's. Focus on the overlap first, then drill into 43 Twitter-only and 134 Walmart Labs-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 10 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Twitter and Walmart Labs.
Step 2 — Company-specific depth: Add Twitter-specific problems like Regular Expression Matching, Multiply Strings, Permutation Sequence and Walmart Labs-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: Twitter skews harder in our data. Budget extra time for Hard problems if you are targeting that company.
Difficulty Comparison
Top Shared Topics
10 Shared Questions
High-priority problems to practice for both Twitter and Walmart Labs.
| Problem | Difficulty |
|---|---|
| Integer to Roman | Medium |
| Valid Parentheses | Easy |
| Merge k Sorted Lists | Hard |
| Trapping Rain Water | Hard |
| Wildcard Matching | Hard |
| Merge Intervals | Medium |
| LRU Cache | Medium |
| Flatten Nested List Iterator | Medium |
| Trapping Rain Water II | Hard |
| Rotting Oranges | Medium |
Unique to Twitter (43)
Problems in Twitter's list that do not appear at Walmart Labs.
| Problem | Difficulty |
|---|---|
| Regular Expression Matching | Hard |
| Multiply Strings | Medium |
| Permutation Sequence | Hard |
| Pascal's Triangle | Easy |
| Word Break II | Hard |
| Time Needed to Buy Tickets | Easy |
| Max Points on a Line | Hard |
| One Edit Distance | Medium |
| Happy Number | Easy |
| Reverse Linked List | Easy |
| Implement Trie (Prefix Tree) | Medium |
| The Skyline Problem | Hard |
Unique to Walmart Labs (134)
Problems in Walmart Labs's list that do not appear at Twitter.
Frequently Asked Questions
How many LeetCode questions do Twitter and Walmart Labs share?
Twitter and Walmart Labs share 10 LeetCode interview questions. 43 problems appear only in Twitter's list and 134 appear only in Walmart Labs's list.
What topics overlap most between Twitter and Walmart Labs?
The most common shared topics between Twitter and Walmart Labs are Array (4 shared questions), String (3 shared questions), Stack (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: Twitter or Walmart Labs?
Twitter has 8 Easy, 33 Medium, and 12 Hard questions. Walmart Labs has 22 Easy, 96 Medium, and 26 Hard questions. Twitter has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both Twitter and Walmart Labs?
Start with the 10 shared problems since they cover what both companies ask most often. Then add 20 Twitter-specific and 20 Walmart Labs-specific questions to round out your prep.