Circular Linked List:

Create a circular linked list building off the example I gave in class. Ensure it has the following methods:

public void printList( ) { }// print each element in the LinkedList

public void insertBefore (int index, Node n) { } // adds Node n before index value

public void insertAfter (int index, Node n) { }// adds Node n after index value

public int indexOf(String str) { }//returns index of where String str is at. Returns -1 if String str is not in LinkedList

public void removeNodeAt(int index) { }// removes Node at index value