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Fix issue #11502 Error in del_node function #11510

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Merged
merged 2 commits into from
Jan 24, 2025
+4 −0
Merged

Fix issue #11502 Error in del_node function #11510

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2d2c6d9
fixed error in del_node function
Rosepetal2022 Aug 6, 2024
dac0b02
Update avl_tree.py
MaximSmolskiy Jan 24, 2025
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5 changes: 4 additions & 1 deletion data_structures/binary_tree/avl_tree.py
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Original file line number Diff line number Diff line change
Expand Up @@ -215,12 +215,15 @@ def del_node(root: MyNode, data: Any) -> MyNode | None:
return root
else:
root.set_left(del_node(left_child, data))
# root.get_data() < data
elif right_child is None:
return root
else:
root.set_right(del_node(right_child, data))

# Re-fetch left_child and right_child references
left_child = root.get_left()
right_child = root.get_right()

if get_height(right_child) - get_height(left_child) == 2:
assert right_child is not None
if get_height(right_child.get_right()) > get_height(right_child.get_left()):
Expand Down