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    Question

    You have a list of numbers and need to find the maximum

    value. Which of the following approaches would be the most efficient in terms of time complexity?
    A Sort the list and take the last element. Correct Answer Incorrect Answer
    B Iterate through the list once, keeping track of the maximum seen so far. Correct Answer Incorrect Answer
    C Use a binary search tree to store elements and find the maximum. Correct Answer Incorrect Answer
    D Use a hash map to store elements and find the maximum. Correct Answer Incorrect Answer
    E Recursively divide the list into halves until a single element remains. Correct Answer Incorrect Answer

    Solution

    Iterating through the list once and maintaining a running maximum takes O(N) time, which is the most efficient approach for this problem. ┬а ┬а Sorting takes O(N log N). ┬а ┬а Binary search tree operations are O(log N) on average, but building it is O(N log N) or O(N^2) worst case. ┬а ┬а Hash map is not suitable for finding maximum efficiently.

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