using System;

class SimpleArrayList<E> {
  private E[] elements;
  private int size;

  public SimpleArrayList(int initialCapacity) {
    if (initialCapacity <= 0)
      throw new ApplicationException("Capacity iniziale <= 0");
    this.elements = new E[initialCapacity];
    size = 0;
  }

  void Rialloca() {
    E[] nuovo = new E[elements.Length*2];
    for(int i = 0; i < elements.Length; i++) {
      nuovo[i] = elements[i];
    }
    elements = nuovo;
  }

  public int Size() {
    return size;
  }

  public void Add(E x) {
    if(size == elements.Length) Rialloca();
    elements[size] = x;
    size++;
  }

  public void Println() {
    Console.WriteLine("l'array e': ");
    foreach(E x in elements)  // si legge: per ciascun intero x in a fai ...
      Console.Write(x + " ");
    Console.WriteLine();
  }

}

class Prova {
  public static void Main() {
    SimpleArrayList<String> a = new SimpleArrayList<String>(3);
    a.Add("Pluto");
    a.Add("Pippo");
    a.Add("Qui");
    a.Add("Quo");
    a.Add("Qua");
    a.Println();
  }
}