DoorDash vs Microsoft Interview Questions
DoorDash lists 78 LeetCode interview questions while Microsoft lists 192. They share 26 problems — 33% of DoorDash's bank and 14% of Microsoft's. Focus on the overlap first, then drill into 52 DoorDash-only and 166 Microsoft-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 26 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DoorDash and Microsoft.
Step 2 — Company-specific depth: Add DoorDash-specific problems like Walls and Gates, Longest Increasing Path in a Matrix, Search Suggestions System and Microsoft-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
26 Shared Questions
High-priority problems to practice for both DoorDash and Microsoft.
| Problem | Difficulty |
|---|---|
| Binary Tree Maximum Path Sum | Hard |
| Koko Eating Bananas | Medium |
| Single-Threaded CPU | Medium |
| Course Schedule II | Medium |
| Next Permutation | Medium |
| Largest Rectangle in Histogram | Hard |
| Basic Calculator | Hard |
| Minimum Size Subarray Sum | Medium |
| Two Sum | Easy |
| Serialize and Deserialize Binary Tree | Hard |
| Sliding Window Maximum | Hard |
| Number of Islands | Medium |
| Course Schedule | Medium |
| Sudoku Solver | Hard |
| Jump Game | Medium |
| LRU Cache | Medium |
| 4Sum | Medium |
| Merge k Sorted Lists | Hard |
| Integer to Roman | Medium |
| Merge Intervals | Medium |
| Jump Game II | Medium |
| Group Anagrams | Medium |
| Longest Palindromic Substring | Medium |
| Roman to Integer | Easy |
| Rotting Oranges | Medium |
| Add Two Numbers | Medium |
Unique to DoorDash (52)
Problems in DoorDash's list that do not appear at Microsoft.
Unique to Microsoft (166)
Problems in Microsoft's list that do not appear at DoorDash.
| Problem | Difficulty |
|---|---|
| Merge Sorted Array | Easy |
| Longest Substring Without Repeating Characters | Medium |
| Trapping Rain Water | Hard |
| Single Element in a Sorted Array | Medium |
| Median of Two Sorted Arrays | Hard |
| Valid Parentheses | Easy |
| 3Sum | Medium |
| Maximum Subarray | Medium |
| Search in Rotated Sorted Array | Medium |
| Reverse Nodes in k-Group | Hard |
| Merge Two Sorted Lists | Easy |
| Spiral Matrix | Medium |
Frequently Asked Questions
How many LeetCode questions do DoorDash and Microsoft share?
DoorDash and Microsoft share 26 LeetCode interview questions. 52 problems appear only in DoorDash's list and 166 appear only in Microsoft's list.
What topics overlap most between DoorDash and Microsoft?
The most common shared topics between DoorDash and Microsoft are Array (15 shared questions), String (6 shared questions), Hash Table (6 shared questions), Depth-First Search (5 shared questions), Breadth-First Search (5 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DoorDash or Microsoft?
DoorDash has 7 Easy, 45 Medium, and 26 Hard questions. Microsoft has 55 Easy, 109 Medium, and 28 Hard questions. DoorDash has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DoorDash and Microsoft?
Start with the 26 shared problems since they cover what both companies ask most often. Then add 20 DoorDash-specific and 20 Microsoft-specific questions to round out your prep.