srakaplan.blogg.se - Merge sorty

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Procedure merge( var a1 as array, var a2 as array ) The pseudocode for merge sort algorithm – The final answer is formed by combining sub-arrays as shown in the below image –

The list will look like this after the final merge.

Next, compare the lists of two data values in the following iteration of the combining phase, then merge them into a list of found data values in sorted order.

Next, again compare 46 and 22 and put 22then 46. Next, compare 3 and 24 they are in the correct order. For example, in the first list, compare 11 and 6, and reverse the order.

Next, compare the elements in each list, then merge them in a sorted manner into another list.

Again divide these arrays until we reach the single value that can no longer be divided.

Now again, split these two arrays in half.

This has no effect on the order in which elements appear in the original array.

The array of 7 elements is split into two arrays, as shown below –

The merge sort divides the entire array into two equal parts iteratively until the single values are reached.

The given array is, an array is subdivided into several sub-arrays in this method.

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Here we discuss the concept of merge sort in C++ with corresponding programming examples and their outputs to demonstrate them.Start Your Free Software Development Course Then we are defining the main function within which we are dividing the given array and then calling mergeSort() function to sort each divided array and then calling merge() function to merge the sorted arrays and then finally calling printArray() function to display the resulting array as the output on the screen. Then we are defining merge(), mergeSort() and printArray() functions. In the above program, we have found the middle point, which divides the given input array into two parts. The output of the above program is shown in the snapshot below: Int array_size = sizeof(array) / sizeof(array) Ĭout << "The elements of the input array before sorting are: \n" Ĭout << "\nThe elements of the input array after sorting are: \n" copying the data from the two halves into two temporary arrays dividing the given array into two halves

Void merge(int array, int left, int middle, int right) defining the merge function to merge the two sorted halves of the given input array Here are the following examples mention below Example #1Ĭ++ program to demonstrate merge sort technique using which sorting a given input array by implementing merge() function and mergeSort() function and then displaying resulting array as the output on the screen:

The merge() function returns a single sorted array.

Then we are going to call the merge() function to merge the two sorted arrays from the second and third steps.

Then we are going to call the mergeSort() function on the second half of the given input array to sort the array.

Then we are going to call the mergeSort() function on the first half of the given input array to sort the array.

The working of merge sort begins by finding the middle point, which divides the given input array into two parts.

Working of merge() function and mergerSort() function in C++ Where input_array is the array of elements that are to be sorted, left indicates the lower bound in the array and right indicates the upper bound in the array. Where input_array is the array of elements that are to be sorted, left indicates the left index in the array, middle indicates the middle index in the array and right indicates the right index in the array.

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