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a) Give regular expressions for the following languages:  1) {w ∈ {0, 1}∗ | w contains at least twice either 001 or 100 as a substring} 2) {w ∈ {0, 1}∗ | w does not contain 101 as a substring}

a) Give regular expressions for the following languages:  1) {w ∈ {0, 1}∗ | w contains at least twice either 001 or 100 as a substring} 2) {w ∈ {0, 1}∗ | w does not contain 101 as a substring}

Computer Networking: A Top-Down Approach (7th Edition)
Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:James Kurose, Keith Ross
Chapter1: Computer Networks And The Internet
Section: Chapter Questions
Problem R1RQ: What is the difference between a host and an end system? List several different types of end...
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a) Give regular expressions for the following languages: 
1) {w ∈ {0, 1}∗ | w contains at least twice either 001 or 100 as a substring}
2) {w ∈ {0, 1}∗ | w does not contain 101 as a substring}

 

b) Construct DFAs for both the Languages discussed in the PART (a) 

c) Construct DFA for RE = (a | b) + ( ba | ab )* + ( ε | aa | bb )+

 

Please solve the above questions, Thank you.

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