Code RoomPoint coverage count
EasyPrep Room Coding #665

Point coverage count

CodingAlgorithms & data structuresEntry–Mid~10 min

Given a list of closed integer intervals [start, end] and a query point q, return how many intervals contain q — that is, satisfy start <= q <= end. Bounds may be negative. Example: intervals [[1,4],[2,2],[5,9]] with q = 2 gives 2.

Implement
count_containing(intervals: list[list[int]], q: int) → int
Examples
in[[[1,4],[2,2],[5,9]],2]out2
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 10 min
InputExpectedGot
[[[1,4],[2,2],[5,9]],2]2not run yetsample