Construct a regular expression defining each of the following languages over the alphabet I = {a, b}. (i) All strings that end in a double letter. (ii) All strings that have exactly one double letter in them.
Construct a regular expression defining each of the following languages over the alphabet I = {a, b}. (i) All strings that end in a double letter. (ii) All strings that have exactly one double letter in them.
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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Q.Construct a regular expression defining each of the following languages
over the alphabet I = {a, b}.
(i) All strings that end in a double letter.
(ii) All strings that have exactly one double letter in them.
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