The Algorithm Visualization Catalog is a comprehensive collection of links to algorithm visualizations, or AVs.

JHAVÉ - 2-3-4 Tree

Link(s)
http://jhave.org/learner
Topic(s)
B-Tree, Search Structures



Recommendation
  
Lecture Aide Not Recommended
Self-study Supplement Not Recommended
Standalone Not Recommended
Debugging Aide Not Recommended
Works?
Yes
Delivery Method(s)
Java Web Start
Project
JHAVÉ
Project Relationship
Part of project
Language(s)
English
Author(s)
Tom Naps
Institution(s)
University of Wisconsin - Oshkosh
Activity Level(s)
Canned data, Questions, Step control
Source Code License
Licensed under Creative Commons
First Published
N/A
Last Modified
N/A

Description
Visualization of basic 2-3-4 Tree insert.
Evaluation
The AV is set up as a series of “slides” in one pane, and pseudocode in the adjacent pane. As the user steps through the “slides”, the associated pseudocode is highlighted. Occasional questions pop up for the user to answer. For a small canned data set, shows 2-3-4 Tree insertion. The nodes are not laid out well, and the data do not fit on the nodes properly. This appears to be a work-in-progress.
Usage Notes
Clicking on the link above will take you to a login page for Jhave. If you do not want to create an account at jhave.org, use anonymous@anonymous.com as your user name and anonymous as your password when you are asked to login. You will then be taken to the Jhave page for this AV. Some Jhave AVs include a tutorial on how the AV itself or the underlying algorithm works. At the bottom are links to the AV (you can run it with a built-in quiz system on or off). The first time you try to run any Jhave exercise, you will have to download the Jhave webstart application. This should happen automatically when you click the link. (You might need to install Java !WebStart if it is not on your machine.) Once you download the Jhave application, the AV should start automatically. You can then step through the AV by repeatedly clicking the right arrow button. Occasionally, you will be given a multiple-choice or short-answer question to answer.
Field Report(s)
References
N/A
Rating
0
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AV of the Day
No
Score
14