Cisco vs DoorDash Interview Questions
Cisco lists 87 LeetCode interview questions while DoorDash lists 78. They share 14 problems — 16% of Cisco's bank and 18% of DoorDash's. Focus on the overlap first, then drill into 73 Cisco-only and 64 DoorDash-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 14 overlapping problems first. These are the highest-yield questions for candidates interviewing at both Cisco and DoorDash.
Step 2 — Company-specific depth: Add Cisco-specific problems like House Robber, Predict the Winner, Lucky Numbers in a Matrix 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
14 Shared Questions
High-priority problems to practice for both Cisco and DoorDash.
| Problem | Difficulty |
|---|---|
| Longest Palindromic Substring | Medium |
| LRU Cache | Medium |
| Merge Intervals | Medium |
| Word Search II | Hard |
| Two Sum | Easy |
| Number of Islands | Medium |
| Add Two Numbers | Medium |
| Group Anagrams | Medium |
| Insert Delete GetRandom O(1) | Medium |
| Merge k Sorted Lists | Hard |
| Jump Game | Medium |
| Design Browser History | Medium |
| Sliding Window Maximum | Hard |
| Largest Rectangle in Histogram | Hard |
Unique to Cisco (73)
Problems in Cisco's list that do not appear at DoorDash.
| Problem | Difficulty |
|---|---|
| House Robber | Medium |
| Predict the Winner | Medium |
| Lucky Numbers in a Matrix | Easy |
| Rotate Image | Medium |
| Spiral Matrix | Medium |
| Fizz Buzz | Easy |
| Snakes and Ladders | Medium |
| Number of Valid Words in a Sentence | Easy |
| Maximum Difference Between Increasing Elements | Easy |
| Find Third Transaction | Medium |
| Implement Router | Medium |
| Maximum Subarray | Medium |
Unique to DoorDash (64)
Problems in DoorDash's list that do not appear at Cisco.
Frequently Asked Questions
How many LeetCode questions do Cisco and DoorDash share?
Cisco and DoorDash share 14 LeetCode interview questions. 73 problems appear only in Cisco's list and 64 appear only in DoorDash's list.
What topics overlap most between Cisco and DoorDash?
The most common shared topics between Cisco and DoorDash are Array (10 shared questions), Hash Table (4 shared questions), Linked List (4 shared questions), String (3 shared questions), Design (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: Cisco or DoorDash?
Cisco has 24 Easy, 50 Medium, and 13 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 Cisco and DoorDash?
Start with the 14 shared problems since they cover what both companies ask most often. Then add 20 Cisco-specific and 20 DoorDash-specific questions to round out your prep.