Q.1: In each case below, find a CFG generating the given language. a. The set of odd-length strings in {a, b}* with middle symbol a. b. The set of even-length strings in {a, b} * with the two middle symbols equal. c. The set of odd-length strings in {a, b}* whose first, middle, and last symbols are all the same.

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
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Q.1: In each case below, find a CFG
generating the given language.
a. The set of odd-length strings in {a, b}*
with middle symbol a.
b. The set of even-length strings in {a, b}
* with the two middle symbols equal.
c. The set of odd-length strings in {a, b}*
whose first, middle, and last symbols are
all the same.
Transcribed Image Text:Q.1: In each case below, find a CFG generating the given language. a. The set of odd-length strings in {a, b}* with middle symbol a. b. The set of even-length strings in {a, b} * with the two middle symbols equal. c. The set of odd-length strings in {a, b}* whose first, middle, and last symbols are all the same.
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