// Small client program that uses ArrayIntList

import java.util.*;

public class ArrayIntListClient {
   public static void main(String[] args) {
      ArrayIntList list = new ArrayIntList();
      list.add(1);
      list.add(2);
      list.add(3);
      list.add(4);
      
      // iterator
      int sum = 0;
      Iterator<Integer> itr = list.iterator();
      while (itr.hasNext()) {
         int n = itr.next();
         sum += n;
         
         if (n % 3 == 0) {
            itr.remove();
         }
      }
      System.out.println("sum: " + sum);
      
            
      // for each
      for (int n : list) {
         System.out.print(n + " ");
      }
      
   }
}