python实现单链表
发布时间:2020-12-17 17:28:45 所属栏目:Python 来源:网络整理
导读:今天PHP站长网 52php.cn把收集自互联网的代码分享给大家,仅供参考。 #coding:utf-8class Node(object): def __init__(self,data): self.data = data self.next = Noneclass NodeList(object): def __init__(self,node):
以下代码由PHP站长网 52php.cn收集自互联网 现在PHP站长网小编把它分享给大家,仅供参考 #coding:utf-8 class Node(object): def __init__(self,data): self.data = data self.next = None class NodeList(object): def __init__(self,node): self.head = node self.head.next = None self.end = self.head def add_node(self,node): self.end.next = node self.end = self.end.next def length(self): node = self.head count = 1 while node.next is not None: count += 1 node = node.next return count # delete node and return it's value def delete_node(self,index): if index+1 > self.length(): raise IndexError('index out of bounds') i = 0 node = self.head while True: if i==index-1: break node = node.next i += 1 tmp_node = node.next node.next = node.next.next return tmp_node.data def show(self): node = self.head node_str = '' while node is not None: if node.next is not None: node_str += str(node.data) + '->' else: node_str += str(node.data) node = node.next print node_str # Modify the original position value and return the old value def change(self,index,data): if index+1 > self.length(): raise IndexError('index out of bounds') i = 0 node = self.head while True: if i == index: break node = node.next i += 1 tmp_data = node.data node.data = data return tmp_data # To find the location of index value def find(self,index): if index+1 > self.length(): raise IndexError('index out of bounds') i = 0 node = self.head while True: if i == index: break node = node.next i += 1 return node.data #test case n1 = Node(0) n2 = Node(1) n3 = Node(2) n4 = Node(3) n5 = Node(4) node_list = NodeList(n1) node_list.add_node(n2) node_list.add_node(n3) node_list.add_node(n4) node_list.add_node(n5) #node = node_list.delete_node(3) #print node #d = node_list.change(0,88) data = node_list.find(5) print data node_list.show() 以上内容由PHP站长网【52php.cn】收集整理供大家参考研究 如果以上内容对您有帮助,欢迎收藏、点赞、推荐、分享。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |