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The following is/are an approach to process a regexp:

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The following is/are an approach to process a regexp:

(a) Contruction of NFA and subsequently, a DFA.

(b) Thompson’s Contruction Algorithm

(c) Both (a) and (b)

(d) None of the mentioned

The question was posed to me in homework.

My question is from Converting Regular Expressions to Automata topic in portion Regular Expressions and Languages of Automata Theory

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The correct answer is (c) Both (a) and (b)

To elaborate: A regexp processor translates the syntax into internal representation which can be executed and matched with a string and that internal representation can have several approaches like the ones mentioned.

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