Series

12. Program


How to Print this series ?

23, 21, 24, 19, 26, 15, 28, 11, 30, 7, 36.....N



import java.util.Scanner;
class Series3
{
 public static void main(String[] args)
 {
  Scanner sc = new Scanner(System.in);
  System.out.print("Enter the range : ");
  int start = 23, add = 1;
  int no = sc.nextInt();
  if(no>23)
  {
   for(int i=2; start < no; i++)
   { boolean flag = true;
    for(int j=2; j <= i/2 ; j++)
    { if(i % j == 0)
     {
                        flag = false;    break;
                    }
                }
                    
    if(flag)
    { 
     add++;
     if(add%2 == 0)
     {
      System.out.print( start + ", "); 
      start=start-i;  
     }
     else
     {
      System.out.print( start + ", ");
      start = start+i ;
     } 
    
    }
   } 
  
  }
  else
  {
   System.out.print("Range must be Greater then 23 ");
  } 
    
 }
}