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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10. 	public static void main (String[] args) throws java.lang.Exception
  11. 	{
  12. 		// your code goes here
  13.         PriorityQueue pq = new PriorityQueue<>(new PQComparator());
  14.  
  15.         pq.add(4);
  16.         pq.add(9);
  17.         pq.add(10);
  18.         pq.add(2);
  19.         pq.add(3);
  20.         pq.add(2);
  21.         pq.add(3);
  22.  
  23.         while (!pq.isEmpty()) {
  24.             System.out.print(pq.poll() + " : ");
  25.         }
  26. 	}
  27.  
  28.  
  29. }
  30.  
  31. class PQComparator implements Comparator<Integer> {
  32.     	@Override
  33.         public int compare(Integer a, Integer b) {
  34.             if (a > b) {
  35.                 return -1;
  36.             } else if (a < b) {
  37.                 return 1;
  38.             }
  39.  
  40.             return 0;
  41.         }
  42.     }
Success #stdin #stdout 0.13s 55512KB
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Standard input is empty
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10 : 9 : 4 : 3 : 3 : 2 : 2 :
https://ideone.com/gAlMRN
language:
Java (HotSpot 12)
created:
17 days ago
visibility:
public

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