(a) Consider the following context free grammars (CFG): i. B> dBb | bBd | dCb C>aC|E ii. E>FG F> fgFg | fgGg |f G>g Do left factoring of the above grammars (if necessary). Why is it needed to do left factoring of a grammar? Explain with proper example. (b) Write down the regular expression and draw the transition diagram of how a lexical analyzer will detect all the positive or negative floating point numbers (eg. 1.5, 45, 2. , - 98. , - 6.71,-.39 etc.). 2.
(a) Consider the following context free grammars (CFG): i. B> dBb | bBd | dCb C>aC|E ii. E>FG F> fgFg | fgGg |f G>g Do left factoring of the above grammars (if necessary). Why is it needed to do left factoring of a grammar? Explain with proper example. (b) Write down the regular expression and draw the transition diagram of how a lexical analyzer will detect all the positive or negative floating point numbers (eg. 1.5, 45, 2. , - 98. , - 6.71,-.39 etc.). 2.
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...
Related questions
Question

Transcribed Image Text:(a) Consider the following context free grammars (CFG):
i.
ii.
B> dBb | bBd | dCb
C>aC |E
E>FG
F> fgFg | fgGg |f
G→ g
Do left factoring of the above grammars (if necessary).
Why is it needed to do left factoring of a grammar? Explain with
proper example.
(b) Write down the regular expression and draw the transition
diagram of how a lexical analyzer will detect all the positive or
negative floating point numbers (eg. 1.5, 45, 2. , - 98. , – 6.71,- .39
etc.).
2.
Expert Solution

This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 4 steps with 2 images

Recommended textbooks for you

Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON

Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science

Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning

Computer Networking: A Top-Down Approach (7th Edi…
Computer Engineering
ISBN:
9780133594140
Author:
James Kurose, Keith Ross
Publisher:
PEARSON

Computer Organization and Design MIPS Edition, Fi…
Computer Engineering
ISBN:
9780124077263
Author:
David A. Patterson, John L. Hennessy
Publisher:
Elsevier Science

Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:
9781337569330
Author:
Jill West, Tamara Dean, Jean Andrews
Publisher:
Cengage Learning

Concepts of Database Management
Computer Engineering
ISBN:
9781337093422
Author:
Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:
Cengage Learning

Prelude to Programming
Computer Engineering
ISBN:
9780133750423
Author:
VENIT, Stewart
Publisher:
Pearson Education

Sc Business Data Communications and Networking, T…
Computer Engineering
ISBN:
9781119368830
Author:
FITZGERALD
Publisher:
WILEY