QUESTION 15 Two CFGS, G1 and G2, are given: G1: S-> as | Sb | alb and G2: S -> aSbs | bsas | e (read e as "epsilon") Which grammar(s) produces the set of strings with equal numbers of a's and b's. O A. G1 and G2. OB. Only G1. C. Only G2. D. None.

QUESTION 15 Two CFGS, G1 and G2, are given: G1: S-> as | Sb | alb and G2: S -> aSbs | bsas | e (read e as "epsilon") Which grammar(s) produces the set of strings with equal numbers of a's and b's. O A. G1 and G2. OB. Only G1. C. Only G2. D. None.

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

Problem 1PE

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Concept explainers

Time Complexity

In computer science, the computational complexity that is measured in terms of time is referred to as time complexity that defines how long it takes a computer to execute an algorithm. An algorithm's time complexity is measured by the the amount of time required to execute each statement of code in the algorithm. If a statement is set to execute repetitively, the number of times it will be N multiplied by the time it takes to run that function each time is equal .

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