Meet Allison & Tim
Your AI coaches
Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
Start Part 1 to unlock your next challenge
Design Memory Allocator
Also known as: Design Memory Allocator (Custom)
This one rewards writing clear, step-by-step logic you can trust. Interviewers love it because it reveals your step-by-step correctness and your edge-case discipline. The classic mistake is a tiny ordering detail; write it like you're debugging a state machine.
Meet Allison & Tim
Your AI coaches
Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
Desktop required to run this problem
StrongYes runs real code + tests in a desktop editor. Mobile is view-only for now, so you can’t start this here. Sorry about that — email yourself a link and pick it up on your computer.
Start Part 1 to unlock your next challenge
Desktop required
Sorry — mobile can’t run the editor + tests yet. Email yourself a link to continue on desktop.