public static void main(String[] args){
System.out.println("输入n,按回车:");
Scanner s = new Scanner(System.in);
Integer n = Integer.parseInt(s.next());
Integer re = factorial(1, n);
System.out.println(re);
}
public static Integer factorial(Integer a, Integer b){
if(b == 1){
return a * b;
}else{
return a * b * factorial(a, b-1);
}
}
这个最后吐槽一句,用循环一下就解决了,非要用递归,闲得蛋疼
追问大哥 我也不想啊 老师给的作业题啊~~~~(>_<)~~~~