How to tell which dynamic programming pattern a problem wants
7 min read A reference to the main dynamic programming families, what the dp array means in each, and the canonical problems that drill each one. Read article
Algorithms
Coding Interview Questions
Solve House Robber with two numbers and a state machine
7 min read House Robber reduces to two running numbers and a two-state machine, and that same shape solves the circular, tree, and stock-cooldown follow-ups. Read article
