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What is the worst case time complexity of a quick sort algorithm?

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What is the worst case time complexity of a quick sort algorithm?

(a) O(N)

(b) O(N log N)

(c) O(N^2)

(d) O(log N)

I have been asked this question during an interview for a job.

Origin of the question is Quicksort topic in section Sorting of Data Structures & Algorithms II

1 Answer

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Best answer
The correct option is (c) O(N^2)

The best explanation: The worst case performance of a quick sort algorithm is mathematically found to be O(N^2).

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