Jan 19, 2025 · Dec 26, 2024 · Jan 19, 2025 · Dec 26, 2024
diff --git a/problems/0019.删除链表的倒数第N个节点.md b/problems/0019.删除链表的倒数第N个节点.md
Original file line number	Diff line number	Diff line change
Expand Up		@@ -129,6 +129,36 @@ class Solution {
		}
		```


	```java
	class Solution {
	public ListNode removeNthFromEnd(ListNode head, int n) {
	// 创建一个新的哑节点,指向原链表头
	ListNode s = new ListNode(-1, head);
	// 递归调用remove方法,从哑节点开始进行删除操作
	remove(s, n);
	// 返回新链表的头(去掉可能的哑节点)
	return s.next;
	}

	public int remove(ListNode p, int n) {
	// 递归结束条件:如果当前节点为空,返回0
	if (p == null) {
	return 0;
	}
	// 递归深入到下一个节点
	int net = remove(p.next, n);
	// 如果当前节点是倒数第n个节点,进行删除操作
	if (net == n) {
	p.next = p.next.next;
	}
	// 返回当前节点的总深度
	return net + 1;
	}
	}
	```


		### Python:

		```python
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