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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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