cs381-fall03-final - CS381 Fall 2003 Final Exam Friday,...

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CS381 Final Exam Friday, Dec. 12, 2003 Fall 2003 Phillips 101 9:00-11:30 am This is a 2 1 2 hour in class closed book exam. All questions are straightforward and you should have no trouble doing them. Please show all work and write legibly. Thank you. 1. Is it decidable for regular sets 1 R and 2 R whether 12 R R ? Justify your answer. 2. Write a context-free grammar for the compliment of { } |() * ww w a b ∈+ . 3. Let be a context-free language. In each string interchange the order of a
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