0 0 votes what is the time complexity of merge sort for already sorted array explain with example? Algorithms merge-sort + – suneetha 618 views answer comment Share Follow Print See 1 comment 1 1 comment reply goxul commented Nov 3, 2018 reply Follow flag The time complexity of merge sort is $\Theta(n \, log n)$ i.e no matter what the input, it will take at least (n log n) time. 3 3 replyShare Please log in or register to add a comment.