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Consider the following variant of QuickSelect: QuickSelect(A,k), where k is between 1 and the size of A (called n) (a) Pick a pivot element p

Consider the following variant of QuickSelect:

QuickSelect(A,k), where k is between 1 and the size of A (called n)

(a) Pick a pivot element p at random from A.

(b) Split A into subarrays SMALL and LARGE by comparing each element to p as in Quicksort. While doing this, count the number S of elements going in to SMALL.

(c) If S=k1, then output p. [always happens when n= 1]

Else If S < n/3 OR S >2n/3 output QuickSelect(A,k).

Else If S > k1 output QuickSelect(SMALL,k).

Else output QuickSelect(LARGE,kL1)

Give the expected running time

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