Construct contextfree grammars that generate the following l

Construct context-free grammars that generate the following languages. In all cases, sigma = {0, 1}. middot {0^2n1^n: n greaterthanorequalto 0} {w: w contains at least three 1s} {w: the length of w is odd and its middle symbol is 0}

Answer:

1. S->A|epsilon

A->00AB|001

B->1

X Y1Y1Y1Y

Y 0Y | 1Y | epsilon

S 0S0 | 0S1 | 1S0 | 1S1 | 0

$Construct context-free grammars that generate the following languages. In all cases, sigma = {0, 1}. middot {0^2n1^n: n greaterthanorequalto 0} {w: w contains$

Construct contextfree grammars that generate the following l

Solution

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