title: ArrayList Efficiency and size
body: <p>I want to be clear on something:
  When using an arraylist, it starts with a size of 10 elements. If it needs to auto-increase, it rewrites the whole arrayList to be 2/3 larger. </p>
  
  <p>If I'm looking at a list that will eventually be size 50-120, is it better to:</p>
  
  <ol>
  <li>create it size 150 right off and have lots of unused space</li>
  <li>allow the list to be auto-increased a few times?</li>
  </ol>
  
  <p>Thanks</p>