@Override
	public void insert(T element) {
		SingleLinkedListNode<T> auxNode = head;
		if (head.isNIL()) {
			head = new SingleLinkedListNode<T>(element, new SingleLinkedListNode<T>());
		} else {
			while (!auxNode.getNext().isNIL())
				auxNode = auxNode.getNext();
			SingleLinkedListNode<T> newNode = new SingleLinkedListNode<T>(element, auxNode.getNext());
			auxNode.next = newNode;
		}
	}