Microsoft

3Sum

Also asked at Amazon, Google

Add Two Numbers

Also asked at Airbnb, Amazon +1

Basic Calculator

Also asked at Netflix, Uber

Climbing Stairs

Design a Gaming Leaderboard Service

Also asked at Reddit

Design a Log Ingestion and Search System

Also asked at Amazon, Google

Design a Notification System for Reddit

Also asked at Airbnb, DoorDash +2

Design a Secrets and Key Management Service

Design DoorDash

Also asked at Amazon, DoorDash

Design Fleet Firmware and Machine Updates

Also asked at Amazon, Google

Design Leader Election

Design Vault (Google Drive-Style File Storage)

Also asked at Harvey

Distributed File System

Also asked at Amazon, Databricks +1

Find Peak Element

Also asked at Meta, Waymo

Fraud Detection System

ML System Design · Also asked at Amazon, DoorDash +4

Group Anagrams

Also asked at Affirm, Amazon +2

Longest Common Prefix

Also asked at Apple, Google +1

Longest Palindromic Substring

Also asked at Amazon, Google

LRU Cache

Also asked at Amazon, Apple +8

Majority Element

Also asked at Google

Maximum Subarray

Also asked at Google, LinkedIn

Median of Two Sorted Arrays

Also asked at Amazon, Dropbox +2

Merge Intervals

Also asked at Amazon, Apple +9

Merge Sorted Array

Also asked at Meta, NVIDIA

Palindrome Number

Also asked at Google

Rotate Image

Slack-like Chat System

Also asked at Atlassian, OpenAI

Trapping Rain Water

Also asked at Airbnb, Amazon +3