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;
     }

 }