The merge(arr, l, m, r) is a key process that assumes that arrl.m and arrm+1.r are sorted and merges the two sorted sub-arrays into one.
The merge() function is used for merging two halves. Quick sort is a highly efficient sorting algorithm and is based on partitioning of array of data into smaller arrays. It divides the input array into two halves, calls itself for the two halves, and then it merges the two sorted halves. I added the printing passes but I don't know how to print the after part for each level's partition when it's sorted, please see my example. Like QuickSort, Merge Sort is a Divide and Conquer algorithm. I added a level parameter, but I'm stuck here.I added a print_from_to function to print left and right of pivot (so from elems left to pivot for left of pivot list, and elems pivot + 1 to right for elems right of pivot). }Any suggestions where to print each level. So that must be a loop contains both rightwards iteration to search if there's any number greater than temp and leftwards vice versa. Code: void print_from_to(list, int lo, int hi)Ĭout << "Before: Level " << level << endl Ĭout << "left of pivot: " << print_from_to(list, left, pivot) << endl Ĭout << "right of pivot: " << print_from_to(list, pivot + 1, right) << endl Well as the principle in each loop of quick sort is to make the temp variable in the position that all elements less than it are put left to temp and greater ones on the right.
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