Meet your coaches
Talk through the problem while you code. Guest text is free. Hosted voice is the Own Words Pack.
Minimum Interval to Include Each Query
Binary search is the tool here, but the real test is whether your invariant stays crisp. It's a hard one for a reason: it stresses boundary precision when the rules pile up. Interviewers care more about airtight boundaries than speed here.
Chat with Fin or Coco right now on mobile.
Start talking through the problem here. Switch to desktop when you're ready to code and run tests.
Start coaching sessionMeet your coaches
Talk through the problem while you code. Guest text is free. Hosted voice is the Own Words Pack.
Start a coached rep now. Guest text is free. Sign in if you want this work on another device.
Email me this coached-rep link
Code + tests need a desktop
Chat works on this phone. Email yourself a link when you want the editor and tests.