class Deque(object): ''' 双端队列 ''' def __init__(self): ''' 初始化列表 ''' self.__list = [] def add_front(self, item): ''' 往队列头部添加元素 ''' self.__list.insert(0, item) def add_rear(self, item): ''' 往队列尾部添加元素 '''
llist.remove_node("a") llist= LinkedList(["a","b","c","d","e"]) llist llist.remove_node("a") llist llist.remove_node("e") llist llist.remove_node("c") llist llist.remove_node("a") 就是这样!现在您知道了如何实现链表以及遍历、插入和删除节点的所有主要方法。如果你对自己所...
依照01开始,共计count张图片 for i in range(1,int(count)+1,1): filename = str(i).zfill(2) + '.' + fmt localname = url[-17:-1] + '-' + filename dest = DWNPATH + title.strip() dlistfile.write(url + filename + '\n') dlistfile.close() command = [WGET, '-P', dest...
Insert an item at a given position. The first argument is the index of the element before which to insert, soa.insert(0,x)inserts at the front of the list, anda.insert(len(a),x)is equivalent toa.append(x). list.remove(x) 删除list的第一个x数据 Remove the first item from the list...
从上面方法可以看出,deque的方法基本都有两个版本,这就体现了它作为双端队列的特征。deque的左边(left)就相当于它的队列头(front)、右边(right)就相当于它的队列尾(rear)。 append和appendleft:在deque的右边或左边添加元素;也就是默认在队列尾添加元素。
_new_len# 初始化原是列表为新长度列表walk=self._front# 保留原有的队列第一个元素的索引forkinrange(self._counter):# 索引从0~队列元素个数-1(即已有元素的所有索引的遍历)为止self._list_que[k]=old[walk]# 将老列表中对应第一个索引开始的元素放在新列表其实第一个位置上,以此类推walk=(walk+1)...
There are four methods to add elements to a List in Python. append() operator to concatenate multiple lists and create a new list. DigitalOcean App Platform Prerequisites In order to complete this tutorial, you will need: Familiarity with installing Python 3. And familiarity with coding in Pytho...
list.append(elmnt) Parameter Values ParameterDescription elmntRequired. An element of any type (string, number, object etc.) More Examples Example Add a list to a list: a = ["apple","banana","cherry"] b = ["Ford","BMW","Volvo"] ...
element before which to insert, so a.insert(0, x) inserts at the front of the list, and a.insert(len(a), x) is equivalent to a.append(x).本方法是在指定的位置插入一个对象，第一个参数是要插入元素的位置，a.insert(0, x)是在当前列表的前面插入，a.insert(len(a),x)等效于a.append(...
return self.__straight_insert(value_list) def __straight_insert(self, value_list): sorted_list = [] sorted_list.append(value_list.pop(0)) for i in range(0, len(value_list)): tail = True # 是否在尾部插入 insert_loc = 0