Using your favorite implementation of regularexpressions (Python,grep, sed,..), input your regex fromThe attached documents and test to see how manystrings from the set of all strings over the alphabet{a,b} of lengthat most 5, i.e., (''', a, b, ab, .., bbbbb} are described by(1.C.,match) each of your input regexes. Note: that youwill have tomatch the *entire* string with the regex, so watch outfor thisimplementation detail.How many strings (you can just give the count) arematched with the attached document Given that,Set of input alphabets= {a, b}The language must contains the strings which havezero or more a's followed by zero or more b's.Set of strings in the language= {"", a, b, aa, ab, bb,aaa, abb, bbb, ...}Step2b)The resultant regular expression for the givenlanguage which contains the strings which have zeroor more a's followed by zero or more b's is:Regular expression= a*b*It is a regular language because, it can berepresented as finite state automata with two statesand both that states are final states. The first containsself loop for input a, for input b it goes to state 2 andsecond state contains self loop for input b.Hence, the given language is said to regularlanguage.

I have written a code to form all the strings formed by the said above regex or any regex which…

Answered: Using your favorite implementation of…

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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Using your favorite implementation of regular expressions (Python, grep, sed,..), input your regex from The attached documents and test to see how many strings from the set of all strings over the alphabet {a,b} of length at most 5, i.e., (''', a, b, ab, .., bbbbb} are described by (1.C., match) each of your input regexes. Note: that you will have to match the *entire* string with the regex, so watch out for this implementation detail. How many strings (you can just give the count) are matched with the attached document

Given that,
Set of input alphabets= {a, b}
The language must contains the strings which have
zero or more a's followed by zero or more b's.
Set of strings in the language= {"", a, b, aa, ab, bb,
aaa, abb, bbb, ...}
Step2
b)
The resultant regular expression for the given
language which contains the strings which have zero
or more a's followed by zero or more b's is:
Regular expression= a*b*
It is a regular language because, it can be
represented as finite state automata with two states
and both that states are final states. The first contains
self loop for input a, for input b it goes to state 2 and
second state contains self loop for input b.
Hence, the given language is said to regular
language.

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