#coding=utf-8
class Node(object):
def __init__(self,data,next=None):
self.data = data
self.next = None
def travel(head):
curr = head
while curr is not None:
print(curr.data)
curr = curr.next
node1=Node(1)
node2=Node(2)
node3=Node(3)
node1.next=node2
node2.next=node3
travel(node1)
# pre = None
# head = node1
# curr = node1
#
# while curr is not None:
# tmp = curr.next
# curr.next=pre
# pre = curr
# curr = tmp
def reverse(head):
if head is None or head.next is None:
return head
new_head = reverse(head.next) # 翻转下个节点开头的小链表,返回头节点
# 修改节点指向
next_node = head.next
next_node.next = head
# 置空head节点,防止链表循环
head.next = None
return new_head
pre = reverse(node1)
travel(pre)
1.翻转链表
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