DoorDash vs PayPal Interview Questions
DoorDash lists 78 LeetCode interview questions while PayPal lists 105. They share 15 problems — 19% of DoorDash's bank and 14% of PayPal's. Focus on the overlap first, then drill into 63 DoorDash-only and 90 PayPal-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 15 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DoorDash and PayPal.
Step 2 — Company-specific depth: Add DoorDash-specific problems like Walls and Gates, Longest Increasing Path in a Matrix, Maximum Profit in Job Scheduling and PayPal-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
15 Shared Questions
High-priority problems to practice for both DoorDash and PayPal.
| Problem | Difficulty |
|---|---|
| Binary Tree Maximum Path Sum | Hard |
| Search Suggestions System | Medium |
| Koko Eating Bananas | Medium |
| Two Sum | Easy |
| Serialize and Deserialize Binary Tree | Hard |
| Asteroid Collision | Medium |
| Number of Islands | Medium |
| Course Schedule | Medium |
| Jump Game | Medium |
| LRU Cache | Medium |
| Merge Intervals | Medium |
| LFU Cache | Hard |
| Group Anagrams | Medium |
| Longest Palindromic Substring | Medium |
| Rotting Oranges | Medium |
Unique to DoorDash (63)
Problems in DoorDash's list that do not appear at PayPal.
Unique to PayPal (90)
Problems in PayPal's list that do not appear at DoorDash.
Frequently Asked Questions
How many LeetCode questions do DoorDash and PayPal share?
DoorDash and PayPal share 15 LeetCode interview questions. 63 problems appear only in DoorDash's list and 90 appear only in PayPal's list.
What topics overlap most between DoorDash and PayPal?
The most common shared topics between DoorDash and PayPal are Array (9 shared questions), Depth-First Search (4 shared questions), String (4 shared questions), Hash Table (4 shared questions), Breadth-First Search (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DoorDash or PayPal?
DoorDash has 7 Easy, 45 Medium, and 26 Hard questions. PayPal has 19 Easy, 69 Medium, and 17 Hard questions. DoorDash has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DoorDash and PayPal?
Start with the 15 shared problems since they cover what both companies ask most often. Then add 20 DoorDash-specific and 20 PayPal-specific questions to round out your prep.