class BagUseLinkList(object):
def __init__(self):
self.__data_list = LinkList()
def add(self, item):
node = Node(item)
self.__data_list.append(node)
def is_empty(self):
return self.__data_list.is_empty()
def __len__(self):
return len(self.__data_list)
def __iter__(self):
self.__data_list.__iter__()
return self
def __next__(self):
return self.__data_list.__next__()
class QueueUseLink(object):
def __init__(self):
self.__list = LinkList()
def enqueue(self, item):
self.__list.append(Node(item))
def dequeue(self):
return self.__list.pop().item_value
def is_empty(self):
return len(self.__list) == 0
def size(self):
return len(self.__list)
def __iter__(self):
self.__list.__iter__()
return self
def __next__(self):
return self.__list.__next__().item_value