Code RoomRemove during iteration quadratic
HardPrep Room Coding #1918

Remove during iteration quadratic

Code reviewCode quality & reviewMid–Senior~20 min

Review this Python function that prunes archived items from an in-memory list. Profiling shows it dominates a nightly job when the list has hundreds of thousands of items.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix, specific and kind.

0:00 of about 20 min
Mark a line and say what kind of problem it is.0 findings
1def prune_archived(items):
2 for item in list(items):
3 if item.archived:
4 items.remove(item)
5 return items
Which questions mattered is sealed until you submit. Telling you now would just be handing over the edge cases.