DoorDash vs Twitter Interview Questions
DoorDash lists 78 LeetCode interview questions while Twitter lists 53. They share 10 problems — 13% of DoorDash's bank and 19% of Twitter's. Focus on the overlap first, then drill into 68 DoorDash-only and 43 Twitter-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 10 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DoorDash and Twitter.
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 Twitter-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
10 Shared Questions
High-priority problems to practice for both DoorDash and Twitter.
| Problem | Difficulty |
|---|---|
| Minimum Number of Steps to Make Two Strings Anagram | Medium |
| Implement Trie (Prefix Tree) | Medium |
| Best Meeting Point | Hard |
| Count Sub Islands | Medium |
| LRU Cache | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Merge k Sorted Lists | Hard |
| Integer to Roman | Medium |
| Merge Intervals | Medium |
| Rotting Oranges | Medium |
Unique to DoorDash (68)
Problems in DoorDash's list that do not appear at Twitter.
Unique to Twitter (43)
Problems in Twitter's list that do not appear at DoorDash.
| Problem | Difficulty |
|---|---|
| Regular Expression Matching | Hard |
| Valid Parentheses | Easy |
| Trapping Rain Water | Hard |
| Multiply Strings | Medium |
| Wildcard Matching | Hard |
| Permutation Sequence | Hard |
| Pascal's Triangle | Easy |
| Word Break II | Hard |
| Time Needed to Buy Tickets | Easy |
| Max Points on a Line | Hard |
| One Edit Distance | Medium |
| Happy Number | Easy |
Frequently Asked Questions
How many LeetCode questions do DoorDash and Twitter share?
DoorDash and Twitter share 10 LeetCode interview questions. 68 problems appear only in DoorDash's list and 43 appear only in Twitter's list.
What topics overlap most between DoorDash and Twitter?
The most common shared topics between DoorDash and Twitter are Hash Table (5 shared questions), Array (5 shared questions), String (3 shared questions), Design (3 shared questions), Math (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DoorDash or Twitter?
DoorDash has 7 Easy, 45 Medium, and 26 Hard questions. Twitter has 8 Easy, 33 Medium, and 12 Hard questions. DoorDash has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DoorDash and Twitter?
Start with the 10 shared problems since they cover what both companies ask most often. Then add 20 DoorDash-specific and 20 Twitter-specific questions to round out your prep.