DoorDash vs Walmart Labs Interview Questions
DoorDash lists 78 LeetCode interview questions while Walmart Labs lists 144. They share 24 problems — 31% of DoorDash's bank and 17% of Walmart Labs's. Focus on the overlap first, then drill into 54 DoorDash-only and 120 Walmart Labs-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 DoorDash and Walmart Labs.
Step 2 — Company-specific depth: Add DoorDash-specific problems like Walls and Gates, Longest Increasing Path in a Matrix, Binary Tree Maximum Path Sum and Walmart Labs-specific problems from the exclusive lists below.
Step 3 — Difficulty tuning: DoorDash 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 DoorDash and Walmart Labs.
| Problem | Difficulty |
|---|---|
| Next Greater Element III | Medium |
| Vertical Order Traversal of a Binary Tree | Hard |
| Course Schedule II | Medium |
| Next Permutation | Medium |
| Largest Rectangle in Histogram | Hard |
| Basic Calculator | Hard |
| Two Sum | Easy |
| Basic Calculator II | Medium |
| Longest Common Subsequence | Medium |
| Asteroid Collision | Medium |
| Sliding Window Maximum | Hard |
| Number of Islands | Medium |
| Course Schedule | Medium |
| Jump Game | Medium |
| LRU Cache | Medium |
| Merge k Sorted Lists | Hard |
| Integer to Roman | Medium |
| Merge Intervals | Medium |
| LFU Cache | Hard |
| Group Anagrams | Medium |
| Longest Palindromic Substring | Medium |
| Roman to Integer | Easy |
| Diameter of Binary Tree | Easy |
| Rotting Oranges | Medium |
Unique to DoorDash (54)
Problems in DoorDash's list that do not appear at Walmart Labs.
Unique to Walmart Labs (120)
Problems in Walmart Labs's list that do not appear at DoorDash.
Frequently Asked Questions
How many LeetCode questions do DoorDash and Walmart Labs share?
DoorDash and Walmart Labs share 24 LeetCode interview questions. 54 problems appear only in DoorDash's list and 120 appear only in Walmart Labs's list.
What topics overlap most between DoorDash and Walmart Labs?
The most common shared topics between DoorDash and Walmart Labs are Array (10 shared questions), String (8 shared questions), Hash Table (7 shared questions), Math (5 shared questions), Depth-First Search (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DoorDash or Walmart Labs?
DoorDash has 7 Easy, 45 Medium, and 26 Hard questions. Walmart Labs has 22 Easy, 96 Medium, and 26 Hard questions. DoorDash has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DoorDash and Walmart Labs?
Start with the 24 shared problems since they cover what both companies ask most often. Then add 20 DoorDash-specific and 20 Walmart Labs-specific questions to round out your prep.