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Without needing extra __________ we can simulate non deterministic turing machine using deterministic turing machine.(a) time(b) space(c) both time and space(d) none of the mentionedThis question was addressed to me in an internship interview.The query is from PSPACE topic in division Other Classes Of Problems of Automata Theory

Answer»

The CORRECT choice is (b) SPACE

To explain: Though it may USE extra time, but as PSPACE=NPSPACE from savitch’s theorem, we can say that space taken is same for both the machins, DETERMINISTIC as WELL as non-deterministic.



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