nl: length returns the length of this list . concode_field_sep SListNode head concode_elem_sep int size concode_elem_sep SListNode tail concode_field_sep Object nth concode_elem_sep void testAfterInsertEnd concode_elem_sep void testAfterInsertFront concode_elem_sep void insertEnd concode_elem_sep boolean isEmpty concode_elem_sep void insertFront concode_elem_sep String toString concode_elem_sep void main concode_elem_sep void testEmpty
code: int function ( ) { return size ; }