Visualization of Quick sort (HD)





The interactive transcript could not be loaded.


Rating is available when the video has been rented.
This feature is not available right now. Please try again later.
Published on Sep 22, 2012

An animated demonstration of sorting algorithms.

Read about my new book, "Zuto: The Adventures of a Computer Virus", http://www.zutopedia.com, or visit my homepage, http://www.zutopedia.com/udia.html

This video shows two comparison based sorting algorithms: Bubble sort and Quick sort.

The algorithms are demonstrated by robots sorting balls by hue. Comparison based sorting algorithms must make decisions based solely on pairwise comparison results. This is visualized by the robot's short-sightedness, which forces them to perform pairwise comparisons in a very pronounced manner.

The video culminates in a contest. Each algorithm is presented with an identical series of balls and they compete to see which finishes the sorting task faster. In addition to raw speed, the number of comparisons they perform is also measured.
Advanced viewers will notice bubble sort performs comparisons quicker than quick sort. This is because quick sort has to move around a lot between comparisons. Quick sort aims at reducing the number of comparisons, but in domains where movement is costly, it becomes inferior to other algorithms, which aim to reduce movement as well.


When autoplay is enabled, a suggested video will automatically play next.

Up next

to add this to Watch Later

Add to

Loading playlists...