2. Give unambiguous CFGS that generate the following languages: a) {w] the number of Os and 1s in w are equal} b) {w| the number of Os in w is at least the number of 1s in w} 3. |Provide a pushdown automata that accepts the language generated by the follow- ing context free grammar: S → (O_E.E) E → S|N N → 0|1|N N 0 → +|-|* |/

Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Automata Question

2.
Give unambiguous CFGS that generate the following languages:
a) {w| the number of Os and 1s in w are equal}
b) {w| the number of Os in w is at least the number of 1s in w}
3.
|Provide a pushdown automata that accepts the language generated by the follow-
ing context free grammar:
S - (O.E.E)
E → S|N
N → 0|1|NN
0 + +|-|*|/
Transcribed Image Text:2. Give unambiguous CFGS that generate the following languages: a) {w| the number of Os and 1s in w are equal} b) {w| the number of Os in w is at least the number of 1s in w} 3. |Provide a pushdown automata that accepts the language generated by the follow- ing context free grammar: S - (O.E.E) E → S|N N → 0|1|NN 0 + +|-|*|/
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