Meet Allison & Tim
Your AI coaches
Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
Best Time to Buy and Sell Stock
Best Time to Buy and Sell Stock is the sliding window pattern: grow, shrink, and maintain just enough state to stay linear. It's a great warm-up that builds stateful scanning without a ton of moving parts. The trap is updating window state in the wrong order when you expand or shrink.
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.
Desktop required
Sorry — mobile can’t run the editor + tests yet. Email yourself a link to continue on desktop.