What is the difference between Quick Sort and Merge Sort? - ProProfs Discuss
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# What is the difference between Quick Sort and Merge Sort?

Asked by R. Jones, Last updated: Sep 11, 2020

#### C. Block

Find happiness in writing new things.

C. Block, English Professor, M.A, Ph.D, Buffalo

These two are techniques that are used by people when they want to sort out different items that may be complicated to sort correctly. Quicksort will sort all of the various elements by comparing the different elements available to the pivot.

Merge sort will divide the array into two subarrays and so on until there is only one element left. Quicksort is easy to use, and it will not take up too much space as compared to Merge Sort. Merge Sort is more efficient though when you need to do large arrays and for any other type of array. Quicksort is better when you are only trying to sort a small group.

#### Larry Thornton

Larry Thornton, Student, MBA, Los Angles

Quick sort and merge sort are two sorting techniques used in arranging items that seem complex in a definite proportion and order, so that each item being sorted can be easily located. However, there are differences between quick sort and merge sort. The differences between quick sort and merge sort can be discussed in relation to the various ways the two are used. Quick sort entails the special way of dividing items into a simpler form or subsets so that each sub problem can be easily sorted.

The process adopts three main stages in sorting items. This includes, the identification of the pivot element, elements less than the pivot element and the element greater than the pivot element, after which the items are sorted. While merge sort has to do with the breaking down of items into two subgroups, after which they are sorted. The sorted items are then merged together for a final sorting process.