/**
* Returns a String representation of the linked list with a comma delimited list of all the
* elements in the list.
*
* @return a String representation of the LinkedList.
*/
public String toString() {
LinkedListNode node = head.next;
StringBuilder buf = new StringBuilder();
while (node != head) {
buf.append(node.toString()).append(", ");
node = node.next;
}
return buf.toString();
}
