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[liza0525] WEEK 07 solutions #2222

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[liza0525] WEEK 07 solutions #2222

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8 changes: 8 additions & 0 deletions reverse-linked-list/liza0525.py
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Original file line number Diff line number Diff line change
@@ -0,0 +1,8 @@
class Solution:
def reverseList(self, head: Optional[ListNode]) -> Optional[ListNode]:
pre_node, curr_node = None, head
while curr_node:
temp = curr_node.next
curr_node.next = pre_node
pre_node, curr_node = curr_node, temp
return pre_node