From 8cf3fabb60a29966bb725b223ada9d92d7aa5bb1 Mon Sep 17 00:00:00 2001
From: Aaron-Lin-74 <84072071+Aaron-Lin-74@users.noreply.github.com>
Date: Sat, 5 Mar 2022 11:41:05 +1100
Subject: [PATCH] =?UTF-8?q?Update=200024.=E4=B8=A4=E4=B8=A4=E4=BA=A4?=
 =?UTF-8?q?=E6=8D=A2=E9=93=BE=E8=A1=A8=E4=B8=AD=E7=9A=84=E8=8A=82=E7=82=B9?=
 =?UTF-8?q?.md?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

TypeScript version code that better matches your c++ code example.
---
 .../0024.两两交换链表中的节点.md    | 40 +++++++------------
 1 file changed, 14 insertions(+), 26 deletions(-)

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 bf1fd5e1..ce75e0d7 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
@@ -254,32 +254,20 @@ 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;
-};
+  const dummyHead: ListNode = new ListNode(0, head);
+  let cur: ListNode = dummyHead;
+  while(cur.next !== null && cur.next.next !== null) {
+    const tem: ListNode = cur.next;
+    const tem1: ListNode = cur.next.next.next;
+    
+    cur.next = cur.next.next; // step 1
+    cur.next.next = tem; // step 2
+    cur.next.next.next = tem1; // step 3
+    
+    cur = cur.next.next;
+  }
+  return dummyHead.next;
+}
 ```
 
 Kotlin: