java：递归练习(1000的阶乘尾部零的个数)

public class Test7 {

	public static void main(String[] args) {
		System.out.println(fun(1000));
	}
	
	public static int fun(int num) {
		if(num>0&&num<5) {
			return 0;
		}
		else {
			return num/5+fun(num/5);
		}
	}

}