1！+2！+3！+……+10！求和

package com.zhidi.loop;public class Cs {    public static void main(String[] args){        long sum=0;        int i=1;        long j=1;        for(int n=1;n<=10;n++){            while(i<=n){                    j=j*i;                    i++;            }            sum+=j;        }System.out.println(sum);    }}