Question

java考试题，题目如下：跪求帮助啊

求表达式：1！+2！+3！+4！+5！的和。（字符界面编程）

Answer 1

public class test {

public static void main(String[] args) {

int result=0;
for(int i=1;i<=5;i++)
{
result+=multiply(i);
}

System.out.print(result);
}
static int multiply(int n){
if(n==1||n==0)
return n;
else
return n*multiply(n-1);
}
}

Answer 2

package javaapplication3;
public class Jiecheng {
static int func(int n){
if(n==1||n==0)
return n;
else
return n*func(n-1);
}
public static void main(String[] args){
int sum=0;
for(int i=1;i<=5;i++)
sum+=func(i);
System.out.println("1！+2！+3！+4！+5！="+sum);
}
}