ByteDance vs DoorDash Interview Questions
ByteDance lists 64 LeetCode interview questions while DoorDash lists 78. They share 16 problems — 25% of ByteDance's bank and 21% of DoorDash's. Focus on the overlap first, then drill into 48 ByteDance-only and 62 DoorDash-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 16 overlapping problems first. These are the highest-yield questions for candidates interviewing at both ByteDance and DoorDash.
Step 2 — Company-specific depth: Add ByteDance-specific problems like Remove Duplicate Letters, Smallest Subsequence of Distinct Characters, First Day Where You Have Been in All the Rooms 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
16 Shared Questions
High-priority problems to practice for both ByteDance and DoorDash.
| Problem | Difficulty |
|---|---|
| LRU Cache | Medium |
| Number of Islands | Medium |
| Course Schedule | Medium |
| Basic Calculator II | Medium |
| Merge Intervals | Medium |
| Two Sum | Easy |
| Rotting Oranges | Medium |
| Longest Common Subsequence | Medium |
| Add Two Numbers | Medium |
| Basic Calculator | Hard |
| Insert Delete GetRandom O(1) | Medium |
| Shortest Distance from All Buildings | Hard |
| Longest Palindromic Substring | Medium |
| Merge k Sorted Lists | Hard |
| Jump Game | Medium |
| Sliding Window Maximum | Hard |
Unique to ByteDance (48)
Problems in ByteDance's list that do not appear at DoorDash.
| Problem | Difficulty |
|---|---|
| Remove Duplicate Letters | Medium |
| Smallest Subsequence of Distinct Characters | Medium |
| First Day Where You Have Been in All the Rooms | Medium |
| Combination Sum | Medium |
| Shortest Bridge | Medium |
| House Robber | Medium |
| Maximal Square | Medium |
| Regular Expression Matching | Hard |
| Top K Frequent Elements | Medium |
| Design Memory Allocator | Medium |
| Word Ladder | Hard |
| Longest Increasing Subsequence | Medium |
Unique to DoorDash (62)
Problems in DoorDash's list that do not appear at ByteDance.
| 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 |
Frequently Asked Questions
How many LeetCode questions do ByteDance and DoorDash share?
ByteDance and DoorDash share 16 LeetCode interview questions. 48 problems appear only in ByteDance's list and 62 appear only in DoorDash's list.
What topics overlap most between ByteDance and DoorDash?
The most common shared topics between ByteDance and DoorDash are Array (8 shared questions), Breadth-First Search (4 shared questions), Math (4 shared questions), String (4 shared questions), Hash Table (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: ByteDance or DoorDash?
ByteDance has 4 Easy, 51 Medium, and 9 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 ByteDance and DoorDash?
Start with the 16 shared problems since they cover what both companies ask most often. Then add 20 ByteDance-specific and 20 DoorDash-specific questions to round out your prep.