From dfa64fa37b9493cfdf41a431d06da3565e86b1c5 Mon Sep 17 00:00:00 2001
From: Steve2020 <841532108@qq.com>
Date: Tue, 11 Jan 2022 13:59:52 +0800
Subject: [PATCH] =?UTF-8?q?=E6=B7=BB=E5=8A=A0=EF=BC=880024.=E4=B8=A4?=
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 =?UTF-8?q?=E8=8A=82=E7=82=B9.md=EF=BC=89=EF=BC=9A=E5=A2=9E=E5=8A=A0typesc?=
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---
 .../0024.两两交换链表中的节点.md    | 32 +++++++++++++++++++
 1 file changed, 32 insertions(+)

diff --git a/problems/0024.两两交换链表中的节点.md b/problems/0024.两两交换链表中的节点.md
index 01abc7b4..bf1fd5e1 100644
--- a/problems/0024.两两交换链表中的节点.md
+++ b/problems/0024.两两交换链表中的节点.md
@@ -250,6 +250,38 @@ var swapPairs = function (head) {
 };
 ```
 
+TypeScript：
+
+```typescript
+function swapPairs(head: ListNode | null): ListNode | null {
+    /**
+     * 初始状态：
+     * curNode -> node1 -> node2 -> tmepNode
+     * 转换过程：
+     * curNode -> node2
+     * curNode -> node2 -> node1
+     * curNode -> node2 -> node1 -> tempNode
+     * curNode = node1
+     */
+    let retNode: ListNode | null = new ListNode(0, head),
+        curNode: ListNode | null = retNode,
+        node1: ListNode | null = null,
+        node2: ListNode | null = null,
+        tempNode: ListNode | null = null;
+
+    while (curNode && curNode.next && curNode.next.next) {
+        node1 = curNode.next;
+        node2 = curNode.next.next;
+        tempNode = node2.next;
+        curNode.next = node2;
+        node2.next = node1;
+        node1.next = tempNode;
+        curNode = node1;
+    }
+    return retNode.next;
+};
+```
+
 Kotlin:
 
 ```kotlin