Java中交换两个数值的三种方法

1.创建一个临时变量存储两个中某个值

    private void swap(){
        int x = 10;
        int y = 100;
        int temp = x;
        x = y;
        y = temp;
    }

2.两数相加保存和值

    private void swap(){
        int x = 10;
        int y = 100;
        x = x + y;
        y = x - y;
        x = x - y;
    }

3.两数异或保存两数状态

    private void swap(){
        int x = 10;
        int y = 100;
        x = x ^ y;
        y = x ^ y;
        x = x ^ y;
    }