Define through recursive definition , The language L of strings that start and end with different latters and also must contain aa in middle of each string, defined over Σ={a,b,c}.  also  Write at least 2 Valid and 2 Invalid strings belongs to this language

C++ Programming: From Problem Analysis to Program Design
8th Edition
ISBN:9781337102087
Author:D. S. Malik
Publisher:D. S. Malik
Chapter15: Recursion
Section: Chapter Questions
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Define through recursive definition , The language L of strings that start and end with different latters and also must contain aa in middle of each string, defined over Σ={a,b,c}.  also  Write at least 2 Valid and 2 Invalid strings belongs to this language

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