32 lines
487 B
Python
32 lines
487 B
Python
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class TreeNode:
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def __init__(self, val):
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self.val = val
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self.left = None
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self.right = None
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def serialize(root):
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if not root:
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return "X"
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leftSerialized = serialize(root.left)
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rightSerialized = serialize(root.right)
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return str(root.val) + leftSerialized + rightSerialized
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root = TreeNode(1)
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root.left = TreeNode(2)
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root.right = TreeNode(3)
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root.right.left = TreeNode(4)
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root.right.right = TreeNode(5)
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print serialize(root)
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