2018-8-30 16:37:17
单链表的demo
从俺弟家回来了!
发现,还是要努力学习是很重要的!!努力学习新的感兴趣的东西!!
多读书还是很重要的!!!
越努力,越幸运!
# coding:utf-8 2018-8-30 16:36:30 class Node(object):
"""节点"""
def __init__(self, elem):
self.elem = elem
self.next = None # node = Node(100) class SingleLinkList(object):
"""单链表"""
def __init__(self, node=None):
self.__head = node def is_empty(self):
"""判断链表为空"""
return self.__head == None def length(self):
"""链表长度"""
# cur游标,用来移动遍历节点
cur = self.__head
# count记录数量
count = 0
while cur !=None :
count += 1
cur = cur.next
return count def travel(self):
"""遍历整个链表"""
cur = self.__head
while cur != None:
print(cur.elem)
cur = cur.next def add(self, item):
"""链表头部添加元素"""
pass def append(self, item):
"""链表尾部添加元素"""
node = Node(item)
if self.is_empty():
self.__head = node
else:
cur = self.__head
while cur.next != None:
cur = cur.next
# 添加节点
cur.next = node def insert(self, pos, item):
"""指定位置添加元素"""
pass def remove(self,item):
"""删除节点"""
pass def search(self, item):
"""查找节点是否存在"""
pass if __name__ == '__main__':
ll = SingleLinkList()
print(ll.is_empty())
print(ll.length()) ll.append(1)
print(ll.is_empty())
print(ll.length()) ll.append(2)
ll.append(3)
ll.append(4)
ll.append(5)
ll.append(6)
ll.travel()