CS 132 Assignment 5 

Add the following options to the linked list class:

 1. A function find the smallest element in the list.

 2. A function to return the kth element in a list. 

 3. A function to delete the kth element in the list. 

 4. A function to delete all occurences of a given element.   
 
Turn this into a sorted list by replacing insertFirst and insertLast 
with a function insert that puts the element in the proper place.


* A function merge that takes two (sorted) lists and merges them 
  into a third list.