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GATE | GATE-CS-2017 (Set 2) | Question 31

  • Last Updated : 10 Sep, 2021

Which of the following statements about the parser is/are correct?

I. Canonical LR is more powerful than SLR.
II. SLR is more powerful than LALR.
III. SLR is more powerful than canonical LR.

(A) I only
(B) II only
(C) III only
(D) II and III only

Answer: (A)

Explanation: LR parsers in term of power

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CLR > LALR > SLR > LR(0)

Therefore, Option A is only correct option.

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