Basic Array Techinques:

• Adding to an Array (Right Shifting)
• Removing from an Array (Left Shifting)
• Resizing an Array (Creating new Array and Copying)
• Getting Objects or Primitives out of an Array ([0,1,...])

Big-O:

• Reasoning to Big-O of an operation
• O(1,n,...) is what type of time?
• End behavior
• Big-O is Worst Case!

HashTables:

• HashCode()
• Bucket Sorting
• Are they O(1) or O(n)?
• How they work, generally