HW4.23

 public class Solution
 {
     public static void main(String[] args)
     {
         double sum = 0;

         for(int i = 1; i <= 50000; i++)
             sum += 1.0 / (i * 1.0);
         System.out.println("From left to right, sum is " + sum);

         sum = 0;

         for(int i = 50000; i >= 1; i--)
             sum += 1.0 / (i * 1.0);
         System.out.println("From right to left, sum is " + sum);
     }
 }