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Mr. Dubey • 52.66K Points
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Q. Which is the worst method of choosing a pivot element?

(A) first element as pivot
(B) last element as pivot
(C) median-of-three partitioning
(D) random element as pivot
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Explanation by: Mr. Dubey 
 choosing the first element as pivot is the worst method because if the input is pre-sorted or in reverse order, then the pivot provides a poor partition.

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