数列求和 Exercise06

数列求和 Exercise06_13

 1 /**
 2  * @author 冰樱梦
 3  * 时间：2018年下半年
 4  * 题目：数列求和
 5  *
 6  */
 7 public class Exercise06_13 {
 8     public static void main(String[] args){
 9         System.out.printf("%-10s%-12s","i","m(i)" );
10         System.out.println("
————————————————————————————————————————————————");
11         for(int i=1;i<=20;i++){
12             System.out.printf("%-10d%-10.4f 
",i,caculateSum(i) );
13         }
14     }
15     public static double caculateSum(double number){
16         double sum=0;
17         for(int i=1;i<=number;i++){
18             sum+=number/(number+1);
19         }
20         return sum;
21     }
22 
23 }