Question

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.

Difficulty:Easy

Category:

Solution

class Solution {
 public:
  bool canAttendMeetings(vector<Interval> &intervals) {
    sort(intervals.begin(), intervals.end(), [](const Interval &a, const Interval &b) { return a.start < b.start; });
    for (int i = 1; i < intervals.size(); ++i) {
      if (intervals[i].start < intervals[i - 1].end) {
        return false;
      }
    }
    return true;
  }
};