关于两个值的交换

关于两个值的交换还有一种方法，但是本人能力有限不能解释！我会在最下面给出代码，谁会的话可以解释一下原理！

public class Dome04{
	public static void main(String[] agrs){

		int a=3;//经典的a b值交换
		int c;
		int b=4;
		System.out.println(" a = " + a + ",b = " + b);
		c = a;
		a = b;
		b = c;
		System.out.println(" a = " + a + ",b = " + b);
		System.out.println("-------------------------------");
		 a = 3;  //因为上面已经定义过了a和b，现在再定义运行时就会报错了！
		 b = 4;		
		System.out.println(" a = " + a + ",b = " + b);
		a = a + b;
		b = a - b;                                  //简单的数学技巧
		a = a - b;
		System.out.println(" a = "+ a  + ",b = " + b);}}

我只把交换的代码写一下吧，定义和上面的一样:

a = a^b;

b = a^b;

a = b^a;