Basic Linked List 4

The end result is a Car Parts application that uses a Linked List and random access to create and maintain persistent data.

Functions
- LinkedList() - Constructs an empty list.
- LinkedList(int n, LinkedList ln) This Constructor is no longer used
- add( int num ) - Inserts the specified element to this list in ascending sorted order.
- addLast( int num) - Appends the given element to the end of this list.
- addFirst( int num ) - Inserts the given element at the beginning of this list.
- DisplayLL() - Displays the elements in the list to the screen
- Remove(int num) - Deletes the specified element from the list.
- isEmpty() - Determines if the list is empty.
- contains( int num ) - Determines if the specified value is in the list.
- toArray(int a[]) - Add each element in the list to the referenced array.
- getLast() - Returns the last element in the list.
- size() - Returns the size of the list i.e., the number of elements.