title: Anything in iPhone that resembles Android ArrayList
body: <p>I am from android background and I just started working on iPhone 
  I want to perform this operation in iPhone as I do in Android.  </p>
  
  <pre><code>ArrayList&lt;String&gt; aa = new ArrayList&lt;String&gt;();
  
  public void fillArray(String s)
  {
      aa.add(s);
  }
  </code></pre>