Swapping two numbers without using third variable

Swapping two numbers without using third variable

 Type one:

   public class Swapping {

    public static void main(String[] arg){

        int a=100,b=200;

        a=a+b;

        b=a-b;

        a=a-b;

        System.out.println("a value is : "+a+" b value is :"+b);

    }   

}

Output:

a value is : 200 b value is :100

Type two:

public class Swapping {  

    public static void main(String[] arg){

        int a=57,b=67;

        a=a*b;

        b=a/b;

        a=a/b;

        System.out.println("a value is : "+a+" b value is :"+b);

    }   

}

Output:

a value is : 67 b value is :57