Which of the Following Statements About the Three Tree Traversal

question 29

Multiple Choice

Which of the following statements about the three tree traversal schemes studied is correct?

• A)Preorder traversal is used for evaluating arithmetic expression trees on a stack-based calculator.
• B)Postorder traversal is used for evaluating arithmetic expression trees on a stack-based calculator.
• C)Preorder traversal is used for removing file directories by removing subdirectories first.
• D)Postorder traversal is used for copying file directories.

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