= resources =
* turing machines and related
** [[wikipedia: Turing machine]]
** DFA::Simple
** C++ turing simulator
** [[wikipedia: finite state machine]]
** [[wikipedia: formal grammar]]
* complexity theory
** [[wikipedia: complexity classes P and NP]]
** [[wikipedia: NP-complete]]
* trees
** avl trees at stanford
** graphviz example
* sorting
** java applet sorting demo