[ OK ] d2bf2eb6-f366-40a6-9002-98c9e7152c74 — full writeup
[ INFO ] category: Behavioral · Multiple Types difficulty: 5 freq: first seen: 2026-03-05
[5][MULTIPLE TYPES]AlgorithmsSystem Design
$ cat problem.md
Amazon — Software Engineer ❌ Failed
Level: Mid-Level
Round: Onsite · Type: Multiple Types · Difficulty: 5/10 · Duration: 180 min · Interviewer: Neutral
Topics: Algorithms, System Design
Location: Seattle, WA, US
Interview date: 2025-08-15
Got offer: False
Summary
Round 1: Coding
Question: LeetCode Problem 3. The interviewer was friendly.
Round 2: Coding
Question: Minimum Common Ancestor.
Round 3: System Design
Question: Design an app similar to QQ Music.
Details
Preparation Tips & Key Takeaways
What I Learned
- Need to be prepared for common algorithm questions.
- System design questions require a broad understanding of different components.
Recommended Preparation
Coding Practice
- Practice common tree algorithms.
- Practice with LeetCode.
System Design
- Study common system design patterns.
- Review high-level architecture diagrams for popular apps.
Resources I Recommend
- LeetCode
- System design interview prep materials
Common Pitfalls to Avoid
- Not being familiar with basic algorithms.
- Lacking a good understanding of system design principles.
LeetCode similar: LeetCode 3, Minimum Common Ancestor