【Java语言】交换两个数的数值

package com.njwbhz.path;

public class Test18 {
    /**
     * @author FairyKunKun
     * @since 2022/2/16
     */
    public static void main(String[] args) {
        //交换两个数的数值
        double a = 10;
        double b = 30;

        //方法一
        double c;
        c = a;
        a = b;
        b = c;

        //方法二
        a = a + b;
        b = a - b;
        a = a - b;

        //方法三
        a = a - b;
        b = a + b;
        a = a + b;

        //方法四
        a = a * b;
        b = a / b;
        a = a / b;

        //方法五
        a = a / b;
        b = a * b;
        a = a * b;
    }
}