![]() ![]() ![]() So as the merge sort algorithm demands us to divide it into 2 halves, at each step we will find the mid of the array by adding the last index and first index and further dividing it by 2. We are given an unsorted array of size 5 and we will sort this array using merge sort. To understand it more deeply let's see the illustration. It then starts merging all the divisions and provides us with the sorted array. It divides the array into 2 halves from the middle and continues doing that till it reaches a single element which means that when the middle element is the only element left. Merge sort works on this ideology of diving the problem into smaller problems or subproblems to solve it efficiently. Merge sort is an efficient sorting technique that uses the concept of divide and conquer algorithm in order to sort the array. Combine: at last it combines all the solutions of the sub-problems.Conquer: solves the sub-problems with the help of recursion and if the sub-problem is small, it solves that directly.Divide: diving the problem into sub-problem.It solves these sub-parts and then combines them to get the desired output. The second basic topic is Divide & Conquer algorithm.Īs its name suggests divide and conquer, this algorithm divides the given problem into sub-parts. It solves the complex problem by breaking them into bits. Recursion solves the bigger problem by solving the smaller version of that problem. It is a process by which a function calls itself again and again until it reaches a base condition. What is Merge Sort?įirst, we need to revise what is Recursion. But have you ever wondered which sorting technique is used in the Java in-built function "Arrays.sort(arr_name)"? Let's learn about Merge Sort in Java!īefore starting with the sorting implementation and algorithm, let's go through the basics. We can either use the in-built function to sort an array or different sorting techniques. If you feel there is anything wrong with my explanation or it can be improved in anyway, please comment or reach out to me.Sorting Techniques help us to arrange the objects in a certain order. See the Pen
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