DoorDash vs Zenefits Interview Questions
DoorDash lists 78 LeetCode interview questions while Zenefits lists 21. They share 6 problems — 8% of DoorDash's bank and 29% of Zenefits's. Focus on the overlap first, then drill into 72 DoorDash-only and 15 Zenefits-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 6 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DoorDash and Zenefits.
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 Zenefits-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
6 Shared Questions
High-priority problems to practice for both DoorDash and Zenefits.
| Problem | Difficulty |
|---|---|
| Shortest Distance from All Buildings | Hard |
| Course Schedule II | Medium |
| Sliding Window Maximum | Hard |
| Number of Islands | Medium |
| Course Schedule | Medium |
| LRU Cache | Medium |
Unique to DoorDash (72)
Problems in DoorDash's list that do not appear at Zenefits.
| Problem | Difficulty |
|---|---|
| Walls and Gates | Medium |
| Longest Increasing Path in a Matrix | Hard |
| Binary Tree Maximum Path Sum | Hard |
| Search Suggestions System | Medium |
| Maximum Profit in Job Scheduling | Hard |
| Koko Eating Bananas | Medium |
| Single-Threaded CPU | Medium |
| Design File System | Medium |
| Check if One String Swap Can Make Strings Equal | Easy |
| Most Profit Assigning Work | Medium |
| Design In-Memory File System | Hard |
| Buddy Strings | Easy |
Unique to Zenefits (15)
Problems in Zenefits's list that do not appear at DoorDash.
| Problem | Difficulty |
|---|---|
| Median of Two Sorted Arrays | Hard |
| Graph Valid Tree | Medium |
| Reverse Linked List | Easy |
| Valid Parentheses | Easy |
| Generate Parentheses | Medium |
| Min Stack | Medium |
| Majority Element II | Medium |
| Excel Sheet Column Title | Easy |
| Majority Element | Easy |
| Trapping Rain Water | Hard |
| Convert Sorted List to Binary Search Tree | Medium |
| N-Queens II | Hard |
Frequently Asked Questions
How many LeetCode questions do DoorDash and Zenefits share?
DoorDash and Zenefits share 6 LeetCode interview questions. 72 problems appear only in DoorDash's list and 15 appear only in Zenefits's list.
What topics overlap most between DoorDash and Zenefits?
The most common shared topics between DoorDash and Zenefits are Breadth-First Search (4 shared questions), Array (3 shared questions), Depth-First Search (3 shared questions), Matrix (2 shared questions), Graph Theory (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DoorDash or Zenefits?
DoorDash has 7 Easy, 45 Medium, and 26 Hard questions. Zenefits has 5 Easy, 11 Medium, and 5 Hard questions. DoorDash has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DoorDash and Zenefits?
Start with the 6 shared problems since they cover what both companies ask most often. Then add 20 DoorDash-specific and 15 Zenefits-specific questions to round out your prep.