Something

public class t3x2 {

  public static void main(String[] args) {

  int hloc = 0;
  int tohash = 0;
  int modulo = 23;
  int count = 0;

    int[] hash = new int[23];   // values come here, initialized to zero

    for (int i = 0; i < args.length; i++)
    {
        tohash = (Integer.parseInt(args[i])) + 2;
        hloc = tohash % modulo;

        if (hash[hloc] != 0)
        {
            do
            {
                count++;
                hloc = (tohash + (count * count)) % modulo;
            } while (count <= modulo && hash[hloc] != 0);

        }
        count = 0;
        hash[hloc] = tohash - 2;
    }

  for (int i = 0; i < hash.length; i++)
  {
      System.out.printf("  %3d:    %3d\n", i, hash[i]);
  }
}  // main

}  // class