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enjoyableprogram
python_algorithm
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Python_queue_by_list.py
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Python_queue_by_list.py
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# 通过我们的列表实现我们的队列
# 队列的实现的是一边进入一边出
# 实现的是先进先出,后进后出
class Queue(object):
# 构造函数
def __init__(self):
self.__list_queue = []
# 实现的是我们的入队
def push_back(self, data):
self.__list_queue.append(data)
# 开始实现我们的出队
def pop_front(self):
if self.__list_queue == []:
raise Exception("queue is empty")
return self.__list_queue.pop(0)
# 开始实现我们的获取队列大小的操作
def get_size(self):
if self.__list_queue == []:
return "queue is empty"
return len(self.__list_queue)
# 实现判断queue 是否为空的函数
def is_empty(self):
return self.__list_queue == []
# 开始实现获取我们的数组中的元素
def show_queue(self):
if self.__list_queue == []:
return None
for item in self.__list_queue:
print(item, end=" ")
print("\n")
if __name__ == "__main__":
queue = Queue()
queue.push_back(11)
queue.push_back(12)
queue.show_queue()
print(queue.pop_front())
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