Sammy Kapoor

This class does not permit duplicate data in any trees, but duplicate data can still be added to 2-4 trees. I'm not sure if this an implementation specific thing though

In AVLs, the arrows can overlap with the heights and balance factors making it hard to see them. Right now, the arrows have a reduced transparency to mitigate the issue....

Most algorithms just have moving circles to indicate pointers. It'd be nice if those circles had the corresponding pseudocode variable name above them that move as the pointers update.