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AshleyBenson- All tests passed #107

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AshleyBenson- All tests passed #107

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10 changes: 9 additions & 1 deletion linked_lists/intersection.py
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Original file line number Diff line number Diff line change
Expand Up @@ -11,4 +11,12 @@ 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

a, b = headA, headB
if not a or not b:
return None

while a!=b:
a = headB if not a else a.next
b = headA if not b else b.next
return a
4 changes: 3 additions & 1 deletion tests/test_intersection.py
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
import pytest
from linked_lists.intersection import *
# from linked_lists.intersection import
from linked_lists.intersection import Node
from linked_lists.intersection import intersection_node


def test_will_return_intersection_for_lists_of_same_length():
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