?
Solved

AsmL Language Recogniser

Posted on 2003-11-05
3
Medium Priority
?
558 Views
Last Modified: 2006-11-17
Requirements:
Given a state diagram for a language recogniser LR. LR should recognise the following sequence of events of the form: d ((c)+ b (a)* b )* d.  You need to implement an ASML application program for the LR-system. LR-system should report the result of recognition process.  You have to test your recogniser on each of the following event sets:
dd
dccbaaabcbbccbbd
dcbbcdabd
dccbaabbabd
dcbaaaaabd
dcbabcbaabcbd
d
dccbaaabcbbccbbdd

Input for recogniser: Sequence of events
Output: “Sequence is recognised” or “Sequence is not recognised”

Construction (“event / or sequence of events”)* means that “event / or sequence of events” can be repeated unlimited number of times or not appear at all;
Construction (“event  / or sequence of events”)+ means that “event / or sequence of events” can be repeated unlimited number of times and must appear at least once.    

In order to implement you LR-system you can use a state diagram on Figure 1. If the recogniser reaches the final state, a sequence of events is “acceptable”(recognised) otherwise a sequence is not recognised.

Figure 1. State diagram for the Recogniser [ d ((c)+  b (a)* b )* d ]
0
Comment
Question by:garyjohno
  • 2
3 Comments
 
LVL 44

Expert Comment

by:Arthur_Wood
ID: 9688413
this appears to be a homework assignment?  If so, then the EE guidelines strictly forbid any expert here from doing your work for you.

Please do not ask us to violate those rules.  it is a matter of intellectual integrity.

AW
0
 
LVL 44

Expert Comment

by:Arthur_Wood
ID: 9688509
in particular, the relevant passage of the membership agreement reads:

"Violating the guidelines for academic honesty or other unethical behavior, it is allowable to help a student with a project, but not doing it for them."

AW

0
 
LVL 101

Accepted Solution

by:
mlmcc earned 375 total points
ID: 9688879
What have you gotten thus far?

Since most of will not understand ASML it might be a good idea to use pseudocode or an algorithm to explain what code you have thus far.

For instance
Read the first character
If not D then
  sequence not recognized
else
  Process rest of string

mlmcc
0

Featured Post

Upgrade your Question Security!

Add Premium security features to your question to ensure its privacy or anonymity. Learn more about your ability to control Question Security today.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Make the most of your online learning experience.
Q&A with Course Creator, Mark Lassoff, on the importance of HTML5 in the career of a modern-day developer.
In this fifth video of the Xpdf series, we discuss and demonstrate the PDFdetach utility, which is able to list and, more importantly, extract attachments that are embedded in PDF files. It does this via a command line interface, making it suitable …
Six Sigma Control Plans

840 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question