From e5c9084b64cd72768b70a4320e124f6901d97896 Mon Sep 17 00:00:00 2001
From: marina <138340846+bt3gl-cryptographer@users.noreply.github.com>
Date: Wed, 2 Aug 2023 19:19:54 -0700
Subject: [PATCH] Create group_odd_and_even.py

---
 linked_lists/group_odd_and_even.py | 31 ++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)
 create mode 100644 linked_lists/group_odd_and_even.py

diff --git a/linked_lists/group_odd_and_even.py b/linked_lists/group_odd_and_even.py
new file mode 100644
index 0000000..30542c9
--- /dev/null
+++ b/linked_lists/group_odd_and_even.py
@@ -0,0 +1,31 @@
+#!/usr/bin/env python3
+# -*- coding: utf-8 -*-
+# author: bt3gl
+
+class Node:
+
+   def __init__(self, val):
+       self.val = val
+       self.next = None
+
+
+def group_odd_and_even(head):
+        
+        if not head:
+            return None
+        
+        odd = head
+        even = odd.next
+        even_head = even
+        
+        while even is not None and even.next is not None:
+            
+            odd.next = even.next
+            odd = odd.next
+            even.next = odd.next
+            even = even.next
+        
+        odd.next = even_head
+        
+        return head
+