Question
Two checkout lanes feed a single packing desk, which alternates between them: one order from lane A, one from lane B, and so on, starting with lane A. When one lane runs out, the desk takes the rest from the other lane in order. Given the two lanes' order numbers, return the sequence the desk processes. Example: A = [1, 3, 5] and B = [2, 4] give [1, 2, 3, 4, 5].
interleave_lanes(a: list[int], b: list[int]) → list[int][[1,3,5],[2,4]]out[1,2,3,4,5]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.