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dlinn [17]
3 years ago
11

Write a grammar for a language whose sentences start with an even and non-zero number of x’s, end with an odd number of z’s, and

have a number of y’s in between equal to the total number of x’s and z’s in the sentence. For example, xxyyyyyzzz is a valid sentence.
Engineering
1 answer:
sveta [45]3 years ago
3 0

Answer:

GRAMMAR

S -> AB

A -> xxAyy | xxyy

B -> yyBzz | yz

EXPLANATION

A is for even number of x's followed by that number of y's

B is for odd number of y's followed by that number of z's

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