http://stackoverflow.com/questions/2105737/has-anyone-seen-this-improvement-to-quicksort-before http://stackoverflow.com/questions/2105737/has-anyone-seen-t...

http://stackoverflow.com/questions/2105737/has-anyone-seen-this-improvement-to-quicksort-before http://stackoverflow.com/questions/2105737/has-anyone-seen-t... Another nice discussion on how to deal with the duplicate problem.