Mathematical machine on which both top-down and bottom up parsers: PDA can be considered as a mathematical machine which scans the input symbols from left to right. Since it uses a pushdown stack as the memory and hence the name. PDA is used to recognize languages of a context free grammar. That is it can determine whether the input string is a sentence of the context free language...

Concepts Of Programming Languages

12th Edition

ISBN: 9780134997186

Author: Sebesta, Robert W.

Publisher: Pearson,

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Chapter 4, Problem 22RQ

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Mathematical machine on which both top-down and bottom up parsers:

PDA can be considered as a mathematical machine which scans the input symbols from left to right.

Since it uses a pushdown stack as the memory and hence the name.

PDA is used to recognize languages of a context free grammar. That is it can determine whether the input string is a sentence of the context free language...

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Chapter 4, Problem 21RQ

Chapter 4, Problem 23RQ

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