Code RoomMinimum interval removals
MediumPrep Room Coding #770

Minimum interval removals

CodingAlgorithms & data structuresMid–Senior~25 min

Given a list of intervals [start, end], return the minimum number of intervals you must remove so that the remaining intervals are pairwise non-overlapping. Intervals that only touch at an endpoint (e.g. [1,2] and [2,3]) are NOT considered overlapping. Return 0 for an empty list.

Implement
erase_overlap_intervals(intervals: list[list[int]]) → int
Examples
in[[[1,2],[2,3],[3,4],[1,3]]]out1
What a strong answer looks like

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.

0:00 of about 25 min
InputExpectedGot
[[[1,2],[2,3],[3,4],[1,3]]]1not run yetsample