DoorDash vs LinkedIn Interview Questions
DoorDash lists 78 LeetCode interview questions while LinkedIn lists 141. They share 19 problems — 24% of DoorDash's bank and 13% of LinkedIn's. Focus on the overlap first, then drill into 59 DoorDash-only and 122 LinkedIn-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 19 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DoorDash and LinkedIn.
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 LinkedIn-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
19 Shared Questions
High-priority problems to practice for both DoorDash and LinkedIn.
| Problem | Difficulty |
|---|---|
| Maximum Profit in Job Scheduling | Hard |
| Koko Eating Bananas | Medium |
| Find K Closest Elements | Medium |
| 01 Matrix | Medium |
| Course Schedule II | Medium |
| Next Permutation | Medium |
| Max Area of Island | Medium |
| Two Sum | Easy |
| Serialize and Deserialize Binary Tree | Hard |
| Number of Islands | Medium |
| LRU Cache | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Merge k Sorted Lists | Hard |
| Integer to Roman | Medium |
| Merge Intervals | Medium |
| Design Add and Search Words Data Structure | Medium |
| Number of Visible People in a Queue | Hard |
| Longest Palindromic Substring | Medium |
| Diameter of Binary Tree | Easy |
Unique to DoorDash (59)
Problems in DoorDash's list that do not appear at LinkedIn.
Unique to LinkedIn (122)
Problems in LinkedIn's list that do not appear at DoorDash.
| Problem | Difficulty |
|---|---|
| Max Stack | Hard |
| Nested List Weight Sum II | Medium |
| All O`one Data Structure | Hard |
| Word Ladder | Hard |
| Find the Celebrity | Medium |
| Nested List Weight Sum | Medium |
| Design Authentication Manager | Medium |
| Find Leaves of Binary Tree | Medium |
| Shortest Word Distance II | Medium |
| Maximum Subarray | Medium |
| Max Consecutive Ones III | Medium |
| Valid Parentheses | Easy |
Frequently Asked Questions
How many LeetCode questions do DoorDash and LinkedIn share?
DoorDash and LinkedIn share 19 LeetCode interview questions. 59 problems appear only in DoorDash's list and 122 appear only in LinkedIn's list.
What topics overlap most between DoorDash and LinkedIn?
The most common shared topics between DoorDash and LinkedIn are Array (11 shared questions), Depth-First Search (6 shared questions), Breadth-First Search (5 shared questions), Hash Table (4 shared questions), String (4 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DoorDash or LinkedIn?
DoorDash has 7 Easy, 45 Medium, and 26 Hard questions. LinkedIn has 25 Easy, 90 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 DoorDash and LinkedIn?
Start with the 19 shared problems since they cover what both companies ask most often. Then add 20 DoorDash-specific and 20 LinkedIn-specific questions to round out your prep.