中科新闻网联想win7无线网卡驱动:用java编写程序，计算数学e的值,e=1+1/1!+1/2!+1/3!+...怎么编写啊
来源：百度文库 编辑：中科新闻网 时间：2024/05/03 03:50:50
public class ABC{
public static void main(String[] args){
int N = Integer.parseInt(args[0]);
double s = 1;
for (int i = 1; i<=N; i++){
s = s+func(i);
}
System.out.println (s);
}
static double func(int n){
double r=1;
for (int i = 1; i<=n; i++){
r = r*i;
}
return 1/r;
}
}
我是用javascript写出来的,你自己再改一下就可以在java里运行了,程序如下:
<script language="javascript">
function cal(nums,cals)
{
var old,i,j=1;
old=cals;
if (cals>=20)
{
document.write(nums+"<br>");
return ;
}
else
{
for (i=1;i<=old;i++)
{
j=j*i;
}
cals=j;
nums=nums+1/cals;
cal(nums,old+1);
}
}
cal(1,1);
</script>
不懂