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Swap Numbers Without Using Third Variable Java Example

  1. /*
  2.         Swap Numbers Without Using Third Variable Java Example
  3.         This Swap Numbers Java Example shows how to
  4.         swap value of two numbers without using third variable using java.
  5. */
  6.  
  7. public class SwapElementsWithoutThirdVariableExample {
  8.  
  9.         public static void main(String[] args) {
  10.                
  11.                 int num1 = 10;
  12.                 int num2 = 20;
  13.                
  14.                 System.out.println("Before Swapping");
  15.                 System.out.println("Value of num1 is :" + num1);
  16.                 System.out.println("Value of num2 is :" +num2);
  17.                
  18.                 //add both the numbers and assign it to first
  19.                 num1 = num1 + num2;
  20.                 num2 = num1 - num2;
  21.                 num1 = num1 - num2;
  22.                
  23.                 System.out.println("Before Swapping");
  24.                 System.out.println("Value of num1 is :" + num1);
  25.                 System.out.println("Value of num2 is :" +num2);
  26.         }
  27.  
  28.  
  29. }
  30.  
  31. /*
  32. Output of Swap Numbers Without Using Third Variable example would be
  33. Before Swapping
  34. Value of num1 is :10
  35. Value of num2 is :20
  36. Before Swapping
  37. Value of num1 is :20
  38. Value of num2 is :10
  39. */