Question
Consider the context-free grammar ({S, P}, {a,b,c}, R, S) where R is this set of rules: S S S P a CSSb a Pa
Consider the context-free grammar ({S, P}, {a,b,c}, R, S) where R is this set of rules: S S S P a CSSb a Pa bPc (a) Write down a derivation tree for the string ccaabab. (b) Argue that there cannot be a derivation tree for any string starting with b. (c) (A little harder.) Argue that the length of any derivable string (of terminals only) must be of the form 3n+ 1 (i.e., 1, 4, 7, 10 etc.).
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Get StartedRecommended Textbook for
Introduction to Algorithms
Authors: Thomas H. Cormen, Charles E. Leiserson, Ronald L. Rivest
3rd edition
978-0262033848
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