Question
You sync workout data from two fitness trackers. Each device reports the minute-of-day for every exercise event it logged, already in increasing order. Given the two logs a and b, produce one combined chronological list containing every event from both devices (duplicates are kept — two devices can log the same minute). Walk both lists with one pointer each instead of concatenating and sorting. Example: a = [3, 10, 20], b = [5, 10, 25] gives [3, 5, 10, 10, 20, 25].
merge_event_logs(a: list[int], b: list[int]) → list[int][[3,10,20],[5,10,25]]out[3,5,10,10,20,25]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.