DoorDash vs Samsung Interview Questions
DoorDash lists 78 LeetCode interview questions while Samsung lists 65. They share 10 problems — 13% of DoorDash's bank and 15% of Samsung's. Focus on the overlap first, then drill into 68 DoorDash-only and 55 Samsung-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 Samsung.
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 Samsung-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 Samsung.
| Problem | Difficulty |
|---|---|
| Vertical Order Traversal of a Binary Tree | Hard |
| Next Permutation | Medium |
| Two Sum | Easy |
| Number of Islands | Medium |
| LRU Cache | Medium |
| Merge k Sorted Lists | Hard |
| Merge Intervals | Medium |
| Jump Game II | Medium |
| Longest Palindromic Substring | Medium |
| Rotting Oranges | Medium |
Unique to DoorDash (68)
Problems in DoorDash's list that do not appear at Samsung.
Unique to Samsung (55)
Problems in Samsung's list that do not appear at DoorDash.
Frequently Asked Questions
How many LeetCode questions do DoorDash and Samsung share?
DoorDash and Samsung share 10 LeetCode interview questions. 68 problems appear only in DoorDash's list and 55 appear only in Samsung's list.
What topics overlap most between DoorDash and Samsung?
The most common shared topics between DoorDash and Samsung are Array (6 shared questions), Hash Table (3 shared questions), Breadth-First Search (3 shared questions), Depth-First Search (2 shared questions), Sorting (2 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DoorDash or Samsung?
DoorDash has 7 Easy, 45 Medium, and 26 Hard questions. Samsung has 12 Easy, 36 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 Samsung?
Start with the 10 shared problems since they cover what both companies ask most often. Then add 20 DoorDash-specific and 20 Samsung-specific questions to round out your prep.