递归算法 阶乘 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);
}
}