edge test cases fixed
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@@ -50,9 +50,9 @@ def pre_order(node):
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def in_order(node):
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def in_order(node):
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if not node:
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if not node:
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return
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return
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pre_order(node.left)
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in_order(node.left)
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print(node.data, end=" ")
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print(node.data, end=" ")
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pre_order(node.right)
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in_order(node.right)
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def post_order(node):
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def post_order(node):
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