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Updated bst to keep track of its parent and to return the node it inserts.

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Donne Martin
2015-08-16 08:21:11 -04:00
parent f26f61e949
commit 6b269d0f45
3 changed files with 20 additions and 6 deletions
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9
graphs_trees/bst/bst.py
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@@ -4,6 +4,7 @@ class Node(object):
self.data = data
self.left = None
self.right = None
self.parent = None
def __str__(self):
return str(self.data)
@@ -13,10 +14,14 @@ def insert(root, data):
if data <= root.data:
if root.left is None:
root.left = Node(data)
root.left.parent = root
return root.left
else:
insert(root.left, data)
return insert(root.left, data)
else:
if root.right is None:
root.right = Node(data)
root.right.parent = root
return root.right
else:
insert(root.right, data)
return insert(root.right, data)