用java语句实现n的阶乘

Posted 2020-10-29 快门先生

import java.util.Scanner;
public class 阶乘 {
       public static void main(string[] args){
 
             Scanner sc=new Scanner(System.in);
             System.out.printIn("请输入一个整数");
             int n=sc.nextInt();
          System.out.printIn("结果为："+f(n));
  }
  public static int f(int n){
            int sum=1;
            for(i=1;i<=n;++i){
                 sum*=i;
            }
            return sum;
    }
}