DoorDash vs Siemens Interview Questions
DoorDash lists 78 LeetCode interview questions while Siemens lists 25. They share 6 problems — 8% of DoorDash's bank and 24% of Siemens's. Focus on the overlap first, then drill into 72 DoorDash-only and 19 Siemens-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 6 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DoorDash and Siemens.
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 Siemens-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
6 Shared Questions
High-priority problems to practice for both DoorDash and Siemens.
| Problem | Difficulty |
|---|---|
| Two Sum | Easy |
| Number of Islands | Medium |
| LRU Cache | Medium |
| Merge Intervals | Medium |
| Group Anagrams | Medium |
| Longest Palindromic Substring | Medium |
Unique to DoorDash (72)
Problems in DoorDash's list that do not appear at Siemens.
Unique to Siemens (19)
Problems in Siemens's list that do not appear at DoorDash.
Frequently Asked Questions
How many LeetCode questions do DoorDash and Siemens share?
DoorDash and Siemens share 6 LeetCode interview questions. 72 problems appear only in DoorDash's list and 19 appear only in Siemens's list.
What topics overlap most between DoorDash and Siemens?
The most common shared topics between DoorDash and Siemens are Array (4 shared questions), Hash Table (3 shared questions), Sorting (2 shared questions), String (2 shared questions), Depth-First Search (1 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DoorDash or Siemens?
DoorDash has 7 Easy, 45 Medium, and 26 Hard questions. Siemens has 8 Easy, 13 Medium, and 4 Hard questions. DoorDash has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DoorDash and Siemens?
Start with the 6 shared problems since they cover what both companies ask most often. Then add 20 DoorDash-specific and 19 Siemens-specific questions to round out your prep.