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added python code remove nth node from end of list #17

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Dec 3, 2024
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added python code remove nth node from end of list #17

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23 changes: 23 additions & 0 deletions docs/linked-list/remove-nth-node-from-end-of-list.md
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,7 @@ defaultValue="java"
values={[
{ label: 'Java', value: 'java', },
{ label: 'C++', value: 'cpp', },
{ label: 'Python', value: 'python', },
]
}>
<TabItem value="java">
Expand Down Expand Up @@ -82,6 +83,28 @@ public:
};
```

</TabItem>
<TabItem value="python">

```python
# Remove Nth Node From End of List
# 时间复杂度O(n)，空间复杂度O(1)
class Solution:
def removeNthFromEnd(self, head, n):
dummy = ListNode(-1)
dummy.next = head
p, q = dummy, dummy

for i in range(n): # q先走n步
q = q.next

while q.next != None: # 一起走
p = p.next
q = q.next
p.next = p.next.next
return dummy.next
```

</TabItem>
</Tabs>

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