Meeting Rooms

Given an array of meeting time intervals where intervals[i] = [starti, endi], determine if a person could attend all meetings.

Example 1:

Input: intervals = [[0,30],[5,10],[15,20]]
Output: false

Example 2:

Input: intervals = [[7,10],[2,4]]
Output: true

Constraints:

0 <= intervals.length <= 104
intervals.length == 2
0 <= starti < endi <= 106

Solution:

class Solution {
    public boolean canAttendMeetings(int[][] intervals) {
        Arrays.sort(intervals, (a, b) -> a[0] - b[0]);
        for (int i = 0; i < intervals.length - 1; i ++) {
            if (intervals[i][1] > intervals[i + 1][0]) {
                return false;
            }
        }
        return true;
    }
}