Amazon vs DoorDash Interview Questions
Amazon lists 1,968 LeetCode interview questions while DoorDash lists 78. They share 68 problems — 3% of Amazon's bank and 87% of DoorDash's. Focus on the overlap first, then drill into 1,900 Amazon-only and 10 DoorDash-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 68 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Amazon and DoorDash.
Step 2 — Company-specific depth: Add Amazon-specific problems like Trapping Rain Water, Longest Substring Without Repeating Characters, Best Time to Buy and Sell Stock and DoorDash-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
68 Shared Questions
High-priority problems to practice for both Amazon and DoorDash.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| LRU Cache | Medium |
| Number of Islands | Medium |
| Group Anagrams | Medium |
| Add Two Numbers | Medium |
| Longest Palindromic Substring | Medium |
| Merge Intervals | Medium |
| Koko Eating Bananas | Medium |
| Course Schedule | Medium |
| Merge k Sorted Lists | Hard |
| Rotting Oranges | Medium |
| Jump Game | Medium |
| Course Schedule II | Medium |
| Sliding Window Maximum | Hard |
| Next Permutation | Medium |
| Roman to Integer | Easy |
| Insert Delete GetRandom O(1) | Medium |
| Asteroid Collision | Medium |
| Jump Game II | Medium |
| Largest Rectangle in Histogram | Hard |
| Binary Tree Maximum Path Sum | Hard |
| 4Sum | Medium |
| Serialize and Deserialize Binary Tree | Hard |
| LFU Cache | Hard |
| Word Search II | Hard |
| Integer to Roman | Medium |
| Basic Calculator | Hard |
| Diameter of Binary Tree | Easy |
| Maximum Profit in Job Scheduling | Hard |
| Basic Calculator II | Medium |
Showing top 30 of 68 shared problems.
Unique to Amazon (1,900)
Problems in Amazon's list that do not appear at DoorDash.
| Problem | Difficulty |
|---|---|
| Trapping Rain Water | Hard |
| Longest Substring Without Repeating Characters | Medium |
| Best Time to Buy and Sell Stock | Easy |
| Reorganize String | Medium |
| 3Sum | Medium |
| Container With Most Water | Medium |
| Median of Two Sorted Arrays | Hard |
| Valid Parentheses | Easy |
| Longest Common Prefix | Easy |
| Subarray Sum Equals K | Medium |
| Merge Sorted Array | Easy |
| Search in Rotated Sorted Array | Medium |
Unique to DoorDash (10)
Problems in DoorDash's list that do not appear at Amazon.
| Problem | Difficulty |
|---|---|
| Count All Valid Pickup and Delivery Options | Hard |
| Mice and Cheese | Medium |
| Immediate Food Delivery I | Easy |
| Subsequence With the Minimum Score | Hard |
| Ways to Make a Fair Array | Medium |
| Shortest Path to Get Food | Medium |
| Count Sub Islands | Medium |
| Maximum Path Quality of a Graph | Hard |
| Brace Expansion | Medium |
| Find Edges in Shortest Paths | Hard |
Frequently Asked Questions
How many LeetCode questions do Amazon and DoorDash share?
Amazon and DoorDash share 68 LeetCode interview questions. 1900 problems appear only in Amazon's list and 10 appear only in DoorDash's list.
What topics overlap most between Amazon and DoorDash?
The most common shared topics between Amazon and DoorDash are Array (16 shared questions), String (8 shared questions), Hash Table (7 shared questions), Depth-First Search (6 shared questions), Math (6 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Amazon or DoorDash?
Amazon has 527 Easy, 1074 Medium, and 367 Hard questions. DoorDash has 7 Easy, 45 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 Amazon and DoorDash?
Start with the 68 shared problems since they cover what both companies ask most often. Then add 20 Amazon-specific and 10 DoorDash-specific questions to round out your prep.