Question
A league database stores jersey assignments as rows "team,number,player". Within one team, a jersey number must belong to exactly one player; the same row may legitimately repeat, and the same number on DIFFERENT teams is fine. Find every (team, number) pair claimed by two or more distinct players and return each as the string "team,number", sorted ascending as plain strings. Example: ["hawks,7,ava", "hawks,7,raj", "owls,7,mia"] gives ["hawks,7"].
jersey_conflicts(rows: list[str]) → list[str][["hawks,7,ava","hawks,7,raj","owls,7,mia"]]out["hawks,7"]State your approach and its time/space complexity out loud before you optimize. Handle the edge cases (empty input, duplicates, overflow), and say why you chose this over the brute force. Green tests are the floor, not the grade.
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.