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  1. package exercises5;
  2.  
  3. public class Exercise8 {
  4.     /*
  5.     *Write  a  program  that  calculates  the  numeric  centre
  6.     *between  1  and  N. A numeric centre is a number that splits
  7.     *a number series  starting on 1 into 2 series whose additions are equal
  8.     */
  9.     public static void main(String[] args) {
  10.         // TODO Auto-generated method stub
  11.         int ask, totalsum, sumtick, sum, totaltick;
  12.         System.out.print("Enter a number to check if it has a numeric centre: ");
  13.         ask= Console.readInt();
  14.         totaltick= 1;
  15.         totalsum= 0;
  16.         while (totaltick <= ask) {
  17.             totalsum+= totaltick;
  18.             totaltick++;
  19.         }
  20.         sumtick= 1;
  21.         sum= 0;
  22.         while (sum != (((totalsum - sumtick)/2)) && sumtick != ask) {
  23.             sum+= sumtick;
  24.             sumtick++;
  25.         }
  26.         if (sum == ((totalsum - sumtick)/2)) {
  27.             System.out.println("The numeric centre is " + sumtick);
  28.         } else {
  29.             System.out.println("The number has no numeric centre");
  30.         }
  31.     }
  32. }
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