Which by magic (or the logic behind the algorithm) is sorted. We can access any element using its index. Note: the pseudocode for the merge operation ignores the end cases. Problem statement − We are given an array, we need to sort it using the concept of merge sort. That means, if you have a list of N unsorted elements, it will take N log(N) operations. In this article, we will learn about the solution to the problem statement given below. The list can hold different types of items. Merge Sort: It is used both concepts of recursion and non-recursion parameter inside algorithm. Here’s the Python code to merge sort an array. In this function, we take two arrays and merge them by comparing their values in ascending order. Found by software developer Tim Peters in 2002, Timsort is a hybrid algorithm derived from merge-sort and insertion-sort algorithms. Algorithm of Merge Sort. Visualizing the algorithm can be done in 2 stages — first, the recursive splitting of the arrays, 2 each 2 at a time, and second, the merge operation. In python, the code of merge-sort contains two functions-Merge Function: This function is used to merge two arrays to form a single array. In this lesson, you will learn how to code sorting algorithms in Python. Well, we talked about it is one of the efficient sorting algorithm. Is that true for Merge Sort? Python Server Side Programming Programming. Python Program for Merge Sort. Time complexity. This Python tutorial helps you to understand what is Merge sort algorithm and how Python implements this algorithm. The index starts from 0, i.e. Merge Sort explained. Another algorithm, called Timsort, is based on merge sort and insertion sort and is used under Python’s hood for its own sorted() function and .sort() methods. 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