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  1. import java.util.*;
  2. import java.lang.*;
  3. import java.io.*;
  4. class Ideone
  5. {
  6. 	public static void main (String[] args) throws java.lang.Exception
  7. 	{
  8. 		int arr[] = {8, 12, 16, 4, 0, 20}, k = 4;
  9. 		HashSet<Integer> hm = new HashSet<Integer>();
  10. 		for(int i=0;i<arr.length;i++) {
  11. 			if(hm.contains(arr[i]+k) || hm.contains(Math.abs(arr[i]-k))) {
  12. 				System.out.println(arr[i]+" "+ (arr[i]+k));
  13. 			}
  14. 			hm.add(arr[i]);
  15. 		}
  16. 	}
  17. }
Success #stdin #stdout 0.05s 2184192KB
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stdin
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Standard input is empty
stdout
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12 16
16 20
4 8
0 4
20 24
https://ideone.com/Hn9ZJJ
language:
Java (HotSpot 12)
created:
5 years ago
visibility:
public

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