john-wilkinson / collections

	 *

	 * @return multitype | null

	 */

	public function pollLast()

	{

		if ($this->isEmpty())

		{

			return null;

		}

		$index = $this->size() - 1;

		$element = $this->get($index);

		$this->removeAt($index);

		return $element;

	}

	/**

	 * Pops an element from the stack represented by this deque.

	 * @return multitype $element

	 * @throws NoSuchElementException

	 */

	public function removeLast()

	{

		if($this->isEmpty())

		{

			throw new NoSuchElementException("List is empty, cannot remove tail element");

		}

		$index = $this->size() - 1;

		$element = $this->get($index);

		$this->removeAt($index);

		return $element;

	}

	/**

	 * Removes the last occurrence of the specified element from this deque.