Two Sigma

Design a Stock Order / Trade Management System

Also asked at Jane Street, Robinhood

Game of Life

Also asked at Dropbox

House Robber III

In-Memory KV Cache with WAL Log

Also asked at Databricks

Intersection of Two Arrays

Also asked at MongoDB

Longest String Chain

Also asked at Citadel

Maximum Sum Circular Subarray

Meeting Rooms II

Also asked at Atlassian, Roblox +4

Memory Allocator

Also asked at OpenAI

Merge K Sorted Lists

Also asked at Amazon, Apple +5

Minimum Space Wasted From Packaging

Multiply Strings

Number of Provinces

Parallel Courses III

Also asked at Snowflake

Power of Four

Valid Parentheses

Also asked at Google, LinkedIn +3

Wildcard Matching

Also asked at Confluent

Word Search II

Also asked at Airbnb, Reddit +2