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Conversion of regular expression to e-NFA takes ___________ time.

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Conversion of regular expression to e-NFA takes ___________ time.

(a) linear

(b) exponential

(c) logarithmic

(d) none of the mentioned

I got this question in my homework.

This intriguing question originated from Conversions among Representations topic in division Properties of Regular Languages of Automata Theory

1 Answer

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Best answer
Right choice is (a) linear

Explanation: It is possible to parse the expression efficiently, using a technique that takes only O(n) time on a expression of length n^3.

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