class ListNode(object):
def __init__(self,x):
self.val=x
self.next=None
class Link(object):
def __init__(self,values=None):
self.nodes=self.set_link(values) if values else None
def get_link(self):
return self.nodes
def set_link(self,values):
if not values :
return False
head=ListNode(0)
move=head
try:
for i in values:
tmp=ListNode(i)
move.next=tmp
move=move.next
except Exception as e:
print(e)
return head.next
def aa(head):
if not head and not head.next:
return head
then=head.next
head.next=None
last=then.next
while then:
then.next=head
head=then
then=last
if then:
last=then.next
return head.val
a=Link([1,2,3,3,4,5,6,7])
b=a.get_link()
print (aa(b))
