CFG

Soru: Aşağıda küme tanımı verilen dillere ait context free grammer leri elde edin.

Dillerin tanımlı olduğu alfabe={0,1}

a-) L1={w| w en az 3 tane 1 içerecek}

b-) L2={w|w uzunluğu tek ve ortadaki sembol 0 olacak}

Çözüm:

a-)

G=<Vn,Vt,P,S>

Vn={S,R}

Vt={0,1}

P:

    S –> R1R1R1R

    R –> 0R | 1R | e

e=epsilon

——————————–

b-)

G=<Vn,Vt,P,S>

Vn={S}

Vt={0,1}

P:

    S –> 0 | 0s0 | 0s1 | 1S0 | 1S1

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