GATE | GATE-CS-2015 (Mock Test) | Question 10

Given an array that represents elements of arithmetic progression in order. It is also given that one element is missing in the progression, the worst case time complexity to find the missing element efficiently is:
(A) Θ(n)
(B) Θ(nLogn)
(C) Θ(Logn)
(D) Θ(1)

Answer: (C)
Explanation: We can use Binary Search to find the missing element. See following link for details.

https://www.geeksforgeeks.org/find-missing-number-arithmetic-progression/amp/
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