🐱(link): 24. 两两交换链表中的节点

补充 go 语言

Author: JalanJiang

docs/data-structure/linked_list/README.md

@@ -222,6 +222,10 @@ class Solution:
 
 优雅递归：
 
+<!-- tabs:start -->
+
+#### **Python**
+
 ```python
 # Definition for singly-linked list.
 # class ListNode:
@@ -243,6 +247,33 @@ class Solution:
  return second_node
 ```
 
+#### **Go**
+
+```go
+/**
+ * Definition for singly-linked list.
+ * type ListNode struct {
+ * Val int
+ * Next *ListNode
+ * }
+ */
+func swapPairs(head *ListNode) *ListNode {
+ if head == nil || head.Next == nil {
+ return head
+ }
+ 
+ firstNode := head
+ secondNode := head.Next
+ 
+ firstNode.Next = swapPairs(secondNode.Next)
+ secondNode.Next = firstNode
+ 
+ return secondNode
+}
+```
+
+<!-- tabs:end -->
+
 ## 25. K 个一组翻转链表
 
 [原题链接](https://leetcode-cn.com/problems/reverse-nodes-in-k-group/)