Algorithms | Divide and Conquer | Question 5
Consider a situation where you don’t have function to calculate power (pow() function in C) and you need to calculate x^n where x can be any number and n is a positive integer. What can be the best possible time complexity of your power function?
(A) O(n)
(B) O(nLogn)
(C) O(LogLogn)
(D) O(Logn)
Answer: (D)
Explanation: We can calculate power using divide and conquer in O(Logn) time. See https://www.zambiatek.com/write-a-c-program-to-calculate-powxn/.
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