What is the average case time complexity of standard merge sort?(a) O(n log n)(b) O(n^2)(c) O(n^2 log n)(d) O(n log n^2)This question was addressed to me during an interview for a job.My question comes from Sorting topic in division Sorting of Data Structures & Algorithms II

What is the average case time complexity of standard merge sort?(a) O(

1.	What is the average case time complexity of standard merge sort?(a) O(n log n)(b) O(n^2)(c) O(n^2 log n)(d) O(n log n^2)This question was addressed to me during an interview for a job.My question comes from Sorting topic in division Sorting of Data Structures & Algorithms II
Answer» Right ANSWER is (a) O(N log n) The best I can explain: The recurrence relation for MERGE sort is given by T(n) = 2T(n/2) + n. This can be solved USING master’s THEOREM and is found equal to O(n log n).

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