Java algorithm recursive algorithm to calculate factorial

This article will share with you the java algorithm to calculate factorial. When learning Java courses, you often encounter the problem of finding factorial. Today I will discuss it with you.

The code is as follows:

package com.xu.main;
  
import java.util.Scanner;
  
public class P9 {
  
  static long fact(int n)
  {
    if(n <= 1)
    {
      return 1;
    }
    else
    {
      return n * fact(n - 1);
    }
  }
    
  public static void main(String[] args) {
    int i;
    System.out.println("请输入要求阶乘的一个整数:");
    Scanner input = new Scanner(System.in);
    i = input.nextInt();
    System.out.println(i + "的阶乘结果是："+fact(i));
  
  }
  
}

Run Result:

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