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GATE | GATE CS 2019 | Question 46

There are n unsorted arrays: A1, A2, ....,An. Assume that n is odd. Each of A1, A2, ...., An contains n distinct elements. There are no common elements between any two arrays. The worst-case time complexity of computing the median of the medians of A1, A2, ....,An is ________ . 

 

(A)

Ο(n log n)
 

(B)

Ο(n2)
 

(C)

Ο(n)
 

(D)

Ω(n2log n)
 

Answer

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