利用递归!
package com.demo09;
import java.util.Scanner;
public class demo01 {
public static void main(String[] args) {
//阶乘的计算
System.out.println("请输入计算的阶乘:");
Scanner sc = new Scanner(System.in);
int f = sc.nextInt();
int sum = factorial(f);
System.out.println("sum="+sum);
}
public static int factorial(int fa) {
if(fa==1){
return 1;
}
return fa*factorial(fa-1);
}
}