From 90d0c5975a391740090f039ccf02dd456abbf212 Mon Sep 17 00:00:00 2001
From: Aryaman Garg <166644611+aryaman0406@users.noreply.github.com>
Date: Thu, 30 Oct 2025 17:43:09 +0530
Subject: [PATCH] Implement swapPairs function to swap nodes

---
 Swap Nodes in Paris | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 Swap Nodes in Paris

diff --git a/Swap Nodes in Paris b/Swap Nodes in Paris
new file mode 100644
index 0000000..0b9f7e5
--- /dev/null
+++ b/Swap Nodes in Paris	
@@ -0,0 +1,21 @@
+class Solution {
+public:
+    ListNode* swapPairs(ListNode* head) {
+        ListNode dummy(0, head);
+        ListNode *prev = &dummy, *cur = head;
+
+        while (cur && cur->next) {
+            ListNode *npn = cur->next->next;
+            ListNode *second = cur->next;
+
+            second->next = cur;
+            cur->next = npn;
+            prev->next = second;
+
+            prev = cur;
+            cur = npn;
+        }
+
+        return dummy.next;        
+    }
+};