Consider the two regular expressions, L1 = = a* + b* and L2 = ab* + ba* + b*a + (a*b)* a) Find a string corresponding to L, but not L2. b) Find a string corresponding to L2 but not L1 c) Find a string in {a, b}* corresponding to

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter8: Arrays And Strings
Section: Chapter Questions
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Consider the two regular expressions,
L1
= a* + b* and L2
= ab* + ba* + b*a + (a*b)*
a) Find a string corresponding to L, but not L2.
b) Find a string corresponding to L2 but not L1
c) Find a string in {a,b}* corresponding to
neither L1 nor L2.
Transcribed Image Text:Consider the two regular expressions, L1 = a* + b* and L2 = ab* + ba* + b*a + (a*b)* a) Find a string corresponding to L, but not L2. b) Find a string corresponding to L2 but not L1 c) Find a string in {a,b}* corresponding to neither L1 nor L2.
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