Meet Allison & Tim
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Practice coding interviews out loud with real-time voice coaching. Your code actually runs.
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Two Sum II - Input Array Is Sorted
Two Sum II - Input Array Is Sorted rewards a clean two-pointer invariant instead of checking every combination. Interviewers love it because it reveals your invariant-driven scanning and your edge-case discipline. Keep the invariant in your head and the pointer moves become obvious.
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.