One way to learn would be to implement your own regex engine. (Or at least think about it implementing it.) You don't need to worry about finites and automaton

One way to learn would be to implement your own regex engine. (Or at least think about it implementing it.) You don't need to worry about finites and automatons and determinism at this point, a simple recursive descent approach is sufficient for learning. https://www.cs.princeton.edu/courses/archive/spr09/cos333/beautiful.html https://www.cs.princeton.edu/courses/archive/spr09/cos333/be...