Construct RE's for following languages over E= {a, b} a) All words which contain substring “abab". b) All words which never end in substrings “bb" and “ba"

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
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Question no. 05:
Construct RE's for following languages over E= {a, b}
a) All words which contain substring “abab".
b) All words which never end in substrings "bb" and “ba"
Transcribed Image Text:Question no. 05: Construct RE's for following languages over E= {a, b} a) All words which contain substring “abab". b) All words which never end in substrings "bb" and “ba"
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