PA of Algorithms Q107

107In quick sort, for sorting n elements, the (n/ 4)th smallest element is selected as pivot using an O(n) time algorithm. What is the worst case time complexity of the quick sort?

Option : B
Explanation :
Recurrance relation is
T (n) = T (n/4) + T (3n/4) + n
On solving using tree’s method.
T(n) = O(nlogn)

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