DoorDash vs Infosys Interview Questions
DoorDash lists 78 LeetCode interview questions while Infosys lists 105. They share 12 problems — 15% of DoorDash's bank and 11% of Infosys's. Focus on the overlap first, then drill into 66 DoorDash-only and 93 Infosys-only questions.
Overview
Preparation Strategy
Step 1 — Shared core: Solve the 12 overlapping problems first. These are the highest-yield questions for candidates interviewing at both DoorDash and Infosys.
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 Infosys-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
12 Shared Questions
High-priority problems to practice for both DoorDash and Infosys.
| Problem | Difficulty |
|---|---|
| Koko Eating Bananas | Medium |
| Next Permutation | Medium |
| Two Sum | Easy |
| Number of Islands | Medium |
| Jump Game | Medium |
| 4Sum | Medium |
| Integer to Roman | Medium |
| Merge Intervals | Medium |
| Group Anagrams | Medium |
| Longest Palindromic Substring | Medium |
| Roman to Integer | Easy |
| Add Two Numbers | Medium |
Unique to DoorDash (66)
Problems in DoorDash's list that do not appear at Infosys.
Unique to Infosys (93)
Problems in Infosys's list that do not appear at DoorDash.
Frequently Asked Questions
How many LeetCode questions do DoorDash and Infosys share?
DoorDash and Infosys share 12 LeetCode interview questions. 66 problems appear only in DoorDash's list and 93 appear only in Infosys's list.
What topics overlap most between DoorDash and Infosys?
The most common shared topics between DoorDash and Infosys are Array (8 shared questions), Hash Table (4 shared questions), String (4 shared questions), Two Pointers (3 shared questions), Sorting (3 shared questions). Mastering these areas prepares you for both companies.
Which company asks harder LeetCode questions: DoorDash or Infosys?
DoorDash has 7 Easy, 45 Medium, and 26 Hard questions. Infosys has 32 Easy, 57 Medium, and 16 Hard questions. DoorDash has a higher proportion of Hard problems in its interview set.
How should I prepare if interviewing at both DoorDash and Infosys?
Start with the 12 shared problems since they cover what both companies ask most often. Then add 20 DoorDash-specific and 20 Infosys-specific questions to round out your prep.