ISRO | ISRO CS 2017 – May | Question 14
The recurrence relation that arises in relation with the complexity of binary search is:
(A)
T(n) = 2T(n/ 2) + k , where k is constant
(B)
T(n) = T(n / 2) + k , where k is constant
(C)
T(n) = T(n / 2) + log n
(D)
T(n) = T(n / 2) + n
Answer: (B)
Explanation:
Binary Search is a linear searching algorithm and takes O(log n) when array is sorted. Refer: Binary Search T(n) = T(n / 2) + k , where k is constant produces a complexity of O(log n)
Hence Option(B) is the correct answer.
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Last Updated :
20 Mar, 2018
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