The ɛmptyless bird has been spotted on rare occasions in the university classrooms. He makes his appearance when students have trouble solving exercises. He can use his feathers to confuse the enemy, defend himself from attacks, and disrupt electronic devices. His sign (ε)< resembles the head of a bird. In automata theory the ‘ε’ denotes the empty string. The ‘<’ is the less than sign. The parentheses are used to group the expressions. In this case, they don’t have any practical effect, thus, the expression is read as “empty less”.


How to code a Deterministic Finite Automaton (DFA) in Java

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