Code. Tutorial. Java. Devel. Tips. Dbunit. Sorting Algorithms Demo. This page is based upon Modified by Guido Bunsen. We all know that Quicksort is one of the fastest algorithms for sorting. It's not often, however, that we get a chance to see exactly how fast Quicksort really is. The following applets chart the progress of several common sorting algorthms while sorting an array of data using constant space algorithms.