一些有趣的代码

1.不使用额外变量而变换两个变量值

public static void main(String[] args) {
        int a = 3;
        int b = 4;
        a = b +(b = a)*0;
        System.out.println("a = "+a);
        System.out.println("b = "+b);
    }

2.斐波那契数列

public static void main(String[] args) {
        int a  =1;
        int b = 1;
        while(b > 0){ //b溢出时终止
            System.out.println(a);
            b = a+(a = b);
        }
    }