int function ( ) { return size ; }
size of the deque concode_field_sep Node<T> next concode_elem_sep Node<Item> current concode_elem_sep Node<Item> last concode_elem_sep int size concode_elem_sep Node<T> previous concode_elem_sep T value concode_elem_sep Node<Item> first concode_field_sep Item next concode_elem_sep void addLast concode_elem_sep Iterator<Item> iterator concode_elem_sep Item removeFirst concode_elem_sep boolean isEmpty concode_elem_sep boolean hasNext concode_elem_sep Item removeLast concode_elem_sep void addFirst concode_elem_sep void remove