Since it took me a while to figure out, here's a hint: click on the card, then click the disclosure arrow on the lower left, then click around until you see "GO"

Example: http://www.comp.nus.edu.sg/~stevenha/visualization/sorting.h... » Click the > in the lower left » Sort » GO

I gave up 3 times and eventually came here because I couldn't get it to play. That should not be this confusing.

If you click "Start Training" in the upper right, you will be asked a series of randomly generated questions on a topic of your choice. So far I've tried the BST training and Bitmask training. I have to say that this is the best randomly generated quiz system that I've seen. There are obviously some very smart people behind this.

Steven Halim, the person behind this, was my lecturer for the competitive programming class I took in my sophomore year. Super nice guy who is really passionate about teaching!

I don't know, I think that part needs some work. Of the 10 questions on bitmask, I had 2 questions show up twice, with the same values too.

This will be great for my Algorithms class next semester. I learn a little better when I have visuals I can correlate to an algorithm.

Hi all, I am the initiator of this project. You can gave me bug reports or suggestions on how to improve VisuAlgo (and its online quiz mode) via [email protected]. Me and my team are still actively developing this tool and will update it over time.

Question banks for certain topics are not big enough so there is a small probability that you can see two random questions that are the same. This should not be true in the near future.

The code is semi open actually (all HTML,CSS,JS files) are on client-side. The only hidden parts (in server-side) are the mechanism to generate random questions and to verify answers automatically and also our graph drawing database :O (you can draw your own graph for DFS/BFS/MST/SSSP/Network Flow/Matching if you haven't notice).

Regarding slow host, it should not be the case in general. Yesterday NUS has network issues that slow down the Internet connection campus wide. Normally it is very fast.

I noticed that you have Google Analytics active on the site. How much traffic did HN push to your site?

This is absolutely amazing.

I think merge sort finally 'clicked' for me after watching that animation. This is an incredible learning tool.

This is a really nice tool, I'm surprised I had not seen this before. It is very nice; I think the word of this needs to spread more and keep it updated and add additional visualizations, particularly more advanced ones.

This is incredible. Often times in a typical data structures class students can get have a difficult time developing intuition for things like BSTs and sorting. This is an awesome tool!

Not only that, but it covers some very useful DS/A like Binary Index Trees and Computational Geometry to which many students are never exposed.

I would have seriously learn Data structures if this tutorial would have existed when I was in college. It expresses data structures and algorithms in simple yet powerful way.

I've never been able to really grasp an algorithm without seeing a visualization or stepping through it myself - this is awesome ^^

Awesome! I love it when people do stuff like this!

Holy smokes! This is nifty, I hope the project continues to live on because it really helps me understand complex topics easier.

Excellent! Thank you. If this code is open sourced may be people can contribute a lot more algorithms!

This is just awesome! I absolutely love it! Bookmarked for life!

This is just stunning. Bravo, sir.

slow hosting (from singapore?) just killed the possible experience.