Jul 19, 2023 · Jul 18, 2023 · Jul 18, 2023 · Jul 18, 2023 · Jul 18, 2023 · Jul 18, 2023
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
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	## 19.删除链表的倒数第N个节点
	# 19.删除链表的倒数第N个节点

		[力扣题目链接](https://leetcode.cn/problems/remove-nth-node-from-end-of-list/)

Expand All		@@ -31,10 +31,12 @@
		输入:head = [1,2], n = 1
		输出:[1]

	## 算法公开课

	[《代码随想录》算法视频公开课](https://programmercarl.com/other/gongkaike.html)::[链表遍历学清楚! \| LeetCode:19.删除链表倒数第N个节点](https://www.bilibili.com/video/BV1vW4y1U7Gf),相信结合视频再看本篇题解,更有助于大家对链表的理解。

	## 思路

	《代码随想录》算法公开课:[链表遍历学清楚! \| LeetCode:19.删除链表倒数第N个节点](https://www.bilibili.com/video/BV1vW4y1U7Gf),相信结合视频在看本篇题解,更有助于大家对链表的理解。
	## 思路


		双指针的经典应用,如果要删除倒数第n个节点,让fast移动n步,然后让fast和slow同时移动,直到fast指向链表末尾。删掉slow所指向的节点就可以了。
Expand Down Expand Up		@@ -93,7 +95,7 @@ public:

		## 其他语言版本

	java:
	### Java:

		```java
		public ListNode removeNthFromEnd(ListNode head, int n){
Expand All		@@ -120,7 +122,8 @@ public ListNode removeNthFromEnd(ListNode head, int n){
		}
		```

	Python:
	### Python:

		```python
		# Definition for singly-linked list.
		# class ListNode:
Expand Down Expand Up		@@ -151,7 +154,8 @@ class Solution:
		return dummy_head.next

		```
	Go:
	### Go:

		```Go
		/**
		* Definition for singly-linked list.
Expand All		@@ -178,7 +182,7 @@ func removeNthFromEnd(head ListNode, n int) ListNode {
		}
		```

	JavaScript:
	### JavaScript:

		```js
		/**
Expand All		@@ -198,7 +202,7 @@ var removeNthFromEnd = function(head, n) {
		return ret.next;
		};
		```
	TypeScript:
	### TypeScript:

		版本一(快慢指针法):

Expand Down Expand Up		@@ -263,7 +267,7 @@ function removeNthFromEnd(head: ListNode \| null, n: number): ListNode \| null {
		};
		```

	Kotlin:
	### Kotlin:

		```Kotlin
		fun removeNthFromEnd(head: ListNode?, n: Int): ListNode? {
Expand All		@@ -284,7 +288,8 @@ fun removeNthFromEnd(head: ListNode?, n: Int): ListNode? {
		}
		```

	Swift:
	### Swift:

		```swift
		func removeNthFromEnd(_ head: ListNode?, _ n: Int) -> ListNode? {
		if head == nil {
Expand All		@@ -309,8 +314,8 @@ func removeNthFromEnd(_ head: ListNode?, _ n: Int) -> ListNode? {
		}
		```

	### PHP:

	PHP:
		```php
		function removeNthFromEnd($head, $n) {
		// 设置虚拟头节点
Expand All		@@ -332,7 +337,8 @@ function removeNthFromEnd($head, $n) {
		}
		```

	Scala:
	### Scala:

		```scala
		object Solution {
		def removeNthFromEnd(head: ListNode, n: Int): ListNode = {
Expand All		@@ -356,7 +362,8 @@ object Solution {
		}
		```

	Rust:
	### Rust:

		```rust
		impl Solution {
		pub fn remove_nth_from_end(head: Option<Box<ListNode>>, mut n: i32) -> Option<Box<ListNode>> {
Expand All		@@ -377,7 +384,8 @@ impl Solution {
		}
		}
		```
	C语言
	### C:

		```c
		/**c语言单链表的定义
		* Definition for singly-linked list.
Expand Down Expand Up		@@ -412,7 +420,8 @@ struct ListNode* removeNthFromEnd(struct ListNode* head, int n) {

		```

	C#:
	### C#:

		```csharp
		public class Solution {
		public ListNode RemoveNthFromEnd(ListNode head, int n) {
Expand Down