LeetCode 252. Meeting Rooms

Question

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

https://leetcode.com/problems/meeting-rooms/

• Solution1

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

Complexity:

Time complexity: O( nlogn)

Space complexity: O(1)