Java初學（1） 遞歸求階乘

import java.util.Scanner;
public class Example2 {

	public static void main(String[] args) {
		Scanner stdIn = new Scanner(System.in);
		int a = stdIn.nextInt();
		System.out.print(a+"! = "+QiuJieCheng(a));
		
	}
	public static int QiuJieCheng(int a)
	{
		if(a>1)
			return a*QiuJieCheng(a-1);
		else
			return 1;
	}

}