193. Meeting Rooms II
MediumIntervals
Given an array of meeting time intervals where intervals[i] = [starti, endi], return the minimum number of conference rooms required. You must allocate rooms such that no two overlapping meetings share the same room.
Examples
Input: [[0,30],[5,10],[15,20]]
Output: 2
Explanation: We need two rooms: one for [0,30] and one for [5,10] then [15,20].
Constraints
- 1 <= intervals.length <= 10^4
- 0 <= starti < endi <= 10^6
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