Swapping two variable values without using any third variable.

Swapping of two values:

/**
 * @author ashok.kumar
 *
 */
public class Swapping {
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		
		int x=2;
		int y=5;
		
		System.out.format("Value of x=%d and y=%d before swapping.\n",x,y);
		
		x=x+y;  // x=7
		y=x-y;  // y=2
		x=x-y;  // x=5
		
		System.out.format("Value of x=%d and y=%d after swapping.",x,y);
	}
}

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