数列求和 Exercise06_13

 /**

  * @author 冰樱梦

  * 时间：2018年下半年

  * 题目：数列求和

  *

  */

 public class Exercise06_13 {

     public static void main(String[] args){

         System.out.printf("%-10s%-12s","i","m(i)" );

         System.out.println("\n————————————————————————————————————————————————");

         for(int i=1;i<=20;i++){

             System.out.printf("%-10d%-10.4f \n",i,caculateSum(i) );

         }

     }

     public static double caculateSum(double number){

         double sum=0;

         for(int i=1;i<=number;i++){

             sum+=number/(number+1);

         }

         return sum;

     }

 }