示意图: python双向链表实现代码: 复制代码 代码如下:#!/usr/bin/python# -*- coding: utf-8 -*- class Node(object): def __init__(self,val,p=0): self.data = val self.next = p self.prev = p class LinkList(object): def __init__(self): self.head = 0 def __getitem__(self, key): if s
