遞歸算法 階乘 JAVA描述

package arithmetic.digui;

import java.util.*;

public class Factorial {

 public static void main(String args[]) {

  Scanner scanner = new Scanner(System.in);

  int i = scanner.nextInt();

  System.out.println(getFactorial(i));

 }

 public static int getFactorial(int n) {

  if (n == 1)

   return 1;

  else

   return n * getFactorial(n - 1);

 }

}