Vibe codingEasyvc-g418

Subject Ai iterationLevel Entry–Mid~10 minCommon in Algorithms & data structures interviewsIndustries Software development

Question

You asked an AI assistant, "make this function faster," and it rewrote your 20-line Java function into a denser version using streams. You can't tell if it's actually faster or just different-looking, and you're not even sure speed was your real problem. What went wrong with how you asked, and how would you re-approach this?

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.

Learn the concepts

Describe your solution

Vibe coding: describe the solution in plain language (or narrate it) and the coach grades your approach. Generating runnable code from your description is coming next.

Run or narrate your approach, then ask the coach.