252. Meeting Rooms
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Given an array of meeting time intervals consisting of start and end times [[s1,e1],[s2,e2],...]
(si < ei), determine if a person could attend all meetings.
For example,
Given [[0, 30],[5, 10],[15, 20]]
,
return false
.
/** * Definition for an interval. * public class Interval { * int start; * int end; * Interval() { start = 0; end = 0; } * Interval(int s, int e) { start = s; end = e; } * } */public class Solution { public boolean canAttendMeetings(Interval[] intervals) { if (intervals.length == 0) { return true; } int[] start = new int[intervals.length]; int[] end = new int[intervals.length]; for (int i = 0; i < intervals.length; i ++) { start[i] = intervals[i].start; end[i] = intervals[i].end; } Arrays.sort(start); Arrays.sort(end); for (int i = 1; i < intervals.length; i ++) { if (start[i] < end[i - 1]) { return false; } } return true; }}
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