From 27cca63bdba200b467c6645384d051a07be064a2 Mon Sep 17 00:00:00 2001
From: Shannon B <89764051+eggoweggo@users.noreply.github.com>
Date: Sat, 14 Jan 2023 13:32:40 -0700
Subject: [PATCH] finished linked list

---
 linked_lists/intersection.py | 13 +++++++++----
 1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/linked_lists/intersection.py b/linked_lists/intersection.py
index f07e2ae..32122c2 100644
--- a/linked_lists/intersection.py
+++ b/linked_lists/intersection.py
@@ -1,6 +1,3 @@
-
-
-
 class Node:
     def __init__(self, value):
         self.val = value
@@ -11,4 +8,12 @@ def intersection_node(headA, headB):
     """ Will return the node at which the two lists intersect.
         If the two linked lists have no intersection at all, return None.
     """
-    pass
\ No newline at end of file
+    if not headA or not headB:
+        return None
+
+    nodeA = headA
+    nodeB = headB
+    while nodeA is not nodeB:
+        nodeA = headB if nodeA is None else nodeA.next
+        nodeB = headA if nodeB is None else nodeB.next 
+    return nodeA