Difference between nfa and nfa with epsillon?
A Non-deterministic Finite Automaton (NFA) allows for multiple transitions for a given input symbol, including transitions to multiple states. An NFA with epsilon (ε) transitions can also move between states without consuming any input symbols, allowing it to change states freely at any point. This capability enhances the expressiveness of the automaton, as it can represent certain languages more efficiently by using ε-transitions to simplify state transitions. In summary, while both types of NFAs are non-deterministic, the inclusion of ε-transitions adds an additional layer of flexibility in state transitions.