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30 lines
715 B
Python
30 lines
715 B
Python
class Node(object):
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def __init__(self, data):
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self.data = data
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self.left = None
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self.right = None
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self.parent = None
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def __str__(self):
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return str(self.data)
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def insert(root, data):
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if root is None:
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root = Node(data)
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return root
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if data <= root.data:
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if root.left is None:
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root.left = Node(data)
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root.left.parent = root
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return root.left
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else:
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return insert(root.left, data)
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else:
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if root.right is None:
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root.right = Node(data)
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root.right.parent = root
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return root.right
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else:
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return insert(root.right, data) |