Answered: replace each production of form Ai ⟹Aj?…

LINUX+ AND LPIC-1 GDE.TO LINUX CERTIF.

5th Edition

ISBN:9781337569798

Author:ECKERT

Publisher:ECKERT

Chapter7: Working With The Bash Shell

Section: Chapter Questions

Problem 6RQ

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Question

Consider the following algorithm and generate a top down parser for it.
START
Arrange non-terminals in some order like A1, A2, A3,…,An
for each i from 1 to n
{
for each j from 1 to i-1
{
replace each production of form Ai ⟹Aj?
with Ai ⟹ X1? | X2? | X3? |…| ?
where Aj ⟹ X1 | X2|…| Xn are current Aj productions
}
}
eliminate immediate left-recursion
END

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