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GATE | GATE-CS-2006 | Question 52

Suppose we have a O(n) time algorithm that finds median of an unsorted array. Now consider a QuickSort implementation where we first find median using the above algorithm, then use median as pivot. What will be the worst case time complexity of this modified QuickSort.

(A)

O(n^2 Logn)

(B)

O(n^2)

(C)

O(n Logn Logn)

(D)

O(nLogn)

Answer

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