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    Question

    Which traversal method is best for copying a binary

    tree?
    A Pre-order Correct Answer Incorrect Answer
    B In-order Correct Answer Incorrect Answer
    C Post-order Correct Answer Incorrect Answer
    D Level-order Correct Answer Incorrect Answer
    E Reverse in-order Correct Answer Incorrect Answer

    Solution

    Post-order traverses children before the root, ideal for duplicating nodes bottom-up.

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