Solved

Search algorithm

Posted on 1998-04-21
6
470 Views
Last Modified: 2008-02-01
1st part.How to implement A* search algorithm in C++ 2nd part how to use this implementation to solve the 8-puzzle problem.
0
Comment
Question by:LOGANSAN
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
  • 2
6 Comments
 

Author Comment

by:LOGANSAN
ID: 1162879
The starting state is started by reading in 9 integers in which the first three represent the top row of tiles the second three represent the middle row of tiles and the last three represent the last row.  The blank tile is lablled 0.  The others are labelled 1-8.  Ex. 2 6 0 4 8 3 1 5 7.  Please document so I can understand what was done.
0
 
LVL 10

Accepted Solution

by:
RONSLOW earned 200 total points
ID: 1162880
What do you mean by a "* search algorithm"?

What is the 8-puzzle problem?

Please provide more information about your assignment question.

Also don't expect anyone here to do your homework for you .. we wil help you with problems you are having with your code, but will NOT write it for you.

0
 
LVL 11

Expert Comment

by:alexo
ID: 1162881
Roger, I agree about the homework part by why would you lock the question thus preventing LOGANSAN from realizing the error of his ways and deleting the question?  Was there some ulterior motive involved?
0
Technology Partners: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

 
LVL 10

Expert Comment

by:RONSLOW
ID: 1162882
nope - no ulterior motive.

If it IS homework, then it'll cost him points to get rid of it (which might discourage him from getting us to do his assignments for him).  And it might also encourage him to do some work first and put up a starting point for his code so we can then help him further.

If it IS NOT homework, then he can reject the answer and we can continue to help with a genuine problem.

I usually post "we won't do your homework for you" messages as answers for that reason.


0
 

Author Comment

by:LOGANSAN
ID: 1162883
I need to see an implementation of the A-star algorithm in C++.
I can't find in books in my area with a example of the A_star algorithm just the theory behind it.  I need this in order to write a program to modify the A-star algorithm and then use it.  However, I am having trouble getting started.
Comment on A-star algorithm:
1 set L ot be a list containing the initial node of the problem
2 let n be node on L for which f(n)=g(n)+h'(n) is minimal. If L is empty fail
3 if n is a goal node, stop and return it and the path from the initial node to n
4 otherwise remove n from L and add to L all of n's children labeling each child with its path from the initial node return to step 2
0
 
LVL 11

Expert Comment

by:alexo
ID: 1162884
I can give you some pointers to get you started:
  http://www-cs-students.stanford.edu/~amitp/Articles/AStar1.html
  http://home.das-netz.de/pat/a-star.htm

(I suggest you reopen the question)
0

Featured Post

Industry Leaders: We Want Your Opinion!

We value your feedback.

Take our survey and automatically be enter to win anyone of the following:
Yeti Cooler, Amazon eGift Card, and Movie eGift Card!

Question has a verified solution.

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

Errors will happen. It is a fact of life for the programmer. How and when errors are detected have a great impact on quality and cost of a product. It is better to detect errors at compile time, when possible and practical. Errors that make their wa…
IntroductionThis article is the second in a three part article series on the Visual Studio 2008 Debugger.  It provides tips in setting and using breakpoints. If not familiar with this debugger, you can find a basic introduction in the EE article loc…
The viewer will learn how to use the return statement in functions in C++. The video will also teach the user how to pass data to a function and have the function return data back for further processing.
The viewer will learn how to user default arguments when defining functions. This method of defining functions will be contrasted with the non-default-argument of defining functions.

739 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