tvl-depot/users/wpcarro/scratch/facebook/reverse-linked-list.py
Vincent Ambo 019f8fd211 subtree(users/wpcarro): docking briefcase at '24f5a642'
git-subtree-dir: users/wpcarro
git-subtree-mainline: 464bbcb15c
git-subtree-split: 24f5a642af
Change-Id: I6105b3762b79126b3488359c95978cadb3efa789
2021-12-14 02:15:47 +03:00

25 lines
468 B
Python

from linked_list import Node
def reverse(node):
prev, curr, next = None, node, node.next
while curr:
curr.next = prev
prev = curr
curr = next
next = curr.next if curr else None
return prev
one = Node(1)
two = Node(2)
three = Node(3)
one.next = two
two.next = three
print(one)
result = reverse(one)
print(result)
assert all([result == three,
three.next == two,
two.next == one])
print("Success!")