package com.xuyigang1234.chp01;
//1!+2!+3!+....+10!的和
public class Demo5 {
    public static void main(String[] args) {
        int sum =0; //和初始化值
        for(int i=1;i<11;i++) {
            int jieCheng=1; //阶乘初始化值
            for(int j=1;j<=i;j++) {
                jieCheng*=j;
                                        
            }
            sum+=jieCheng;
        }
        System.out.println("1!+2!+3!+....+10!的和为: "+ sum);
    
}
}
输出为:1!+2!+3!+....+10!的和为: 4037913

 

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