Day04

Day04

可变参数

package com.susu2568.method;

public class Demo02 {
    public static void main(String[] args) {
        printMax(34, 3, 3, 2, 56.5);
        printMax(new double[]{1, 2, 3});

    }

    public static void printMax(double... numbers) {
        if (numbers.length == 0) {
            System.out.println("No argument passed");
            return;
        }
        
        double result = numbers[0];
        for (int i = 0; i < numbers.length; i++) {
            if (numbers[i] > result) {
                result = numbers[i];
            }
        }
        System.out.println("The max value is " + result);
    }
}

//out:
//The max value is 56.5
//        The max value is 3.0

递归

package com.susu2568.method;

public class Demo03 {
    public static void main(String[] args) {
        System.out.println(f(3));
    }
    public static int f(int n){
        if (n==1){
           return 1;
        }else {
            return n*f(n-1);
        }
    }
}