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  1. /* package whatever; // swap the number without using temporaray variable */
  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. int a=5;
  13. int b=3;
  14. swap(a,b);
  15. }
  16. public static void swap(int a,int b) {
  17. a=a+b;
  18. b=a-b;
  19. a=a-b;
  20. System.out.println("after swapping a:"+a+ "afterswapping b:" +b);
  21. }
  22. }
Success #stdin #stdout 0.12s 57420KB
stdin
Standard input is empty
stdout
after swapping a:3afterswapping b:5