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    Question

    A programmer is implementing a data analysis tool that

    frequently needs to append elements to a collection. If an array is used, what is a potential performance bottleneck during this operation?
    A O(1) access time Correct Answer Incorrect Answer
    B O(n) search time Correct Answer Incorrect Answer
    C O(n) for resizing when the array is full Correct Answer Incorrect Answer
    D O(log n) for sorting Correct Answer Incorrect Answer
    E O(1) deletion at the end Correct Answer Incorrect Answer

    Solution

    While appending to an array is often O(1) on average, if the underlying array runs out of space, a new, larger array must be allocated, and all existing elements copied over. This resizing operation has a time complexity of O(n).

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