Because the recursive search algorithm doesn't require a parameter for a tree node, you can define it as a top-level method.
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Q7: The height of an empty tree is
Q8: You should use a postorder iteration method
Q9: In a tree, an interior node is
Q10: In a tree, the root item has
Q11: In the replace method for a binary
Q13: The preorder traversal algorithm traverses the left
Q14: Two trees are considered equal if they
Q15: The level order traversal guides the visits
Q16: An expression tree is never empty.
Q17: The maximum amount of work that it
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