206

Author: imDarshanGK

0001-500/Reverse Linked List.py

@@ -0,0 +1,15 @@
+# Definition for singly-linked list.
+# class ListNode:
+#     def __init__(self, val=0, next=None):
+#         self.val = val
+#         self.next = next
+class Solution:
+    def reverseList(self, head: Optional[ListNode]) -> Optional[ListNode]:
+        previous = None
+        current = head
+        while current:
+            next_temp = current.next
+            current.next = previous
+            previous = current
+            current = next_temp
+        return previous