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Code RoomPassword validation requirements
MediumPrep Room Coding #4343

Password validation requirements

Vibe & agenticAlgorithms & data structuresEntry–Mid~12 min

You need to add client-side validation to a signup form's password field in a React app: minimum 8 characters, at least one number, and it must match the 'confirm password' field. You're going to ask an AI assistant to write it. Write the prompt, then point out one acceptance criterion a vague prompt would almost certainly miss.

Implement
password_error(password: str, confirm: str, touched: bool) → str
Examples
in["Sunshine1","Sunshine1",true]out""
in["short1","short1",true]out"Password must be at least 8 characters"
What a strong answer looks like

Treat the AI’s output as a draft to verify, not an answer to trust. Name the specific flaw and the input that triggers it, say how you’d catch it (tests, edge cases, reading critically), and how you’d re-prompt or decompose to get it right.

0:00 of about 12 min

Vibe & agentic: describe the solution in plain language (or narrate it) and the coach grades your approach.

Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.