Question
A courier's assigned delivery windows for one day are given as [start, end] pairs in minutes; the courier is occupied for the half-open span [start, end). The list is unsorted. Return True if a single courier can work all of them, i.e. no two windows overlap. Back-to-back windows, where one ends exactly as the next begins, are fine. Example: [[30,75],[0,30],[75,90]] is True.
can_handle_all(windows: list[list[int]]) → bool[[[30,75],[0,30],[75,90]]]outtrueState 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.