Code RoomList items swap after deletion
MediumPrep Room Coding #4618

List items swap after deletion

Vibe & agenticAlgorithms & data structuresMid–Senior~14 min

An AI produced this reorderable list. Items render correctly at first, but after you delete a middle item, the wrong input's text appears in the wrong row. What's the root cause?

Implement
visible_input_texts(item_ids: list[str], delete_index: int, key_by_index: bool) → list[str]
Examples
in[["a","b","c","d"],1,true]out["a","b","c"]
in[["a","b","c","d"],1,false]out["a","c","d"]
in[["a","b","c","d"],3,true]out["a","b","c"]
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 14 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.