不是用第三元素交换

时间：2020-12-21 09:11:17 收藏：0 阅读：23

int main()
{
    int a = 3;
    int b = 5;
    //int tmp = 0;//临时变量
    printf("a=%d,b=%d\n", a, b);
    //tmp = a;
    //a = b;
    //b = tmp;

    //加减法(缺陷，溢出)
    //a = a + b;
    //b=a - b;
    //a = a - b;

    //异或的方法
    a = a ^ b;
    b = a ^ b;
    a = a ^ b;

    printf("a=%d,b=%d\n", a, b);
    return 0;
}

原文：https://blog.51cto.com/15057883/2568155