Question
Implement a per-IP sliding-window rate limiter. You are given a list of events [ip, timestamp] in non-decreasing timestamp order. Each IP may have at most `limit` accepted events within any window of `window` seconds (an event at time t counts events in the half-open interval (t-window, t]). Process events in order: return a list of booleans, True if the event is accepted (and thus counts toward the limit), False if it is rejected. Rejected events do not consume quota.
rate_limit(events: list[list], limit: int, window: int) → list[bool][[["a",1],["a",2],["a",3]],2,10]out[true,true,false]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.