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    Question

    Time complexity of heap sort

    is:
    A O(n) Correct Answer Incorrect Answer
    B O(log n) Correct Answer Incorrect Answer
    C O(n²) Correct Answer Incorrect Answer
    D O(n log n) Correct Answer Incorrect Answer
    E O(1) Correct Answer Incorrect Answer

    Solution

    Heap sort builds heap O(n) + repeated extraction O(n log n).

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