两数交换

package practice01;
//在不借助额外变量的情况下，两个数交换
public class demo09 {
    public static void main(String[] args) {
        int a=12;
        int b=89;
        System.out.println(a);
        System.out.println(b);
        a=a^b;
        b=a^b;
        a=a^b;
        System.out.println(a);
        System.out.println(b);
    }
}