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33 | /**
* 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 <= 1) return true;
PriorityQueue<Interval> queue = new PriorityQueue<Interval>(intervals.length,
new Comparator<Interval>(){
public int compare(Interval i, Interval k){
return i.start-k.start;
}
});
queue.addAll(Arrays.asList(intervals));
Interval prev = queue.poll();
while (!queue.isEmpty()){
Interval temp = queue.poll();
if(isOverlap(temp, prev)) return false;
prev = temp;
}
return true;
}
boolean isOverlap (Interval i, Interval b){
return !(i.start >= b.end || b.start >= i.end);
}
}
|
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