Create 92 Reverse Linked List II .py

Leetcode/92 Reverse Linked List II .py

@@ -0,0 +1,20 @@
+class Solution:
+    def reverseBetween(self, head: Optional[ListNode], left: int, right: int) -> Optional[ListNode]:
+        dummy = Node(0 ,head)
+        leftPrev ,cur = dummy , head
+
+        for i in range(left-1):
+          leftPrev, cur = cur,cur.next
+
+        prev = None
+        for i in range(right - left +1):
+          tmpNext = cur.next
+          cur.next = prev
+          prev , cur = cur, tmpNext
+
+        leftPrev.next.next = cur
+        leftPrev.next = prev
+        return dummy.next
+
+
+