Solved

k-shortest path implementation with C language

Posted on 2008-10-04
4
564 Views
Last Modified: 2012-05-05
Hi.
By using Dijkskta algorimth i have implemented an application for find the 1st shortest path of an optical network. Unfortunately, this is not enough. It is necessary to calculate the 2st & 3rd shortest path, using the same algorithm or something else, always by using language C. Do you have any idea how to do it??

www.cs.bham.ac.uk/~mhe/foundations2/node113.html - 16k -
(my code is similar to  the code of the above link)
0
Comment
Question by:tsakyr
  • 3
4 Comments
 
LVL 45

Expert Comment

by:sunnycoder
ID: 22640091
http://www.dis.uniroma1.it/~challenge9/papers/santos.pdf

Implementation of K-shortest Path Dijkstra Algorithm used in All-optical Data Communication Networks
http://www.u.arizona.edu/~saurabh/SIE/kDijkstra546.pdf
0
 
LVL 45

Accepted Solution

by:
sunnycoder earned 500 total points
ID: 22640100
Btw, you can use your existing algo too ...

Find the shortest path
second_shortest = HIGH_VALUE
for all edges in shortest path
     remove the edge
     current = find the shortest path
     second_shortest = min (second_shortest, current)
     put back edge
end for

If you iterate over this pseudocode k times - removing the edge for shortest path each time, you would have k shortest paths.
0
 

Author Closing Comment

by:tsakyr
ID: 31503003
Realy, thanks a lot.
0
 
LVL 45

Expert Comment

by:sunnycoder
ID: 22640216
Glad to help :)

Was wondering why you chose a B grade. Pls refer to grading guidelines here
http://www.experts-exchange.com/help.jsp#hi403
0

Featured Post

Netscaler Common Configuration How To guides

If you use NetScaler you will want to see these guides. The NetScaler How To Guides show administrators how to get NetScaler up and configured by providing instructions for common scenarios and some not so common ones.

Question has a verified solution.

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

Have you thought about creating an iPhone application (app), but didn't even know where to get started? Here's how: ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ Important pre-programming comments: I’ve never tri…
Windows programmers of the C/C++ variety, how many of you realise that since Window 9x Microsoft has been lying to you about what constitutes Unicode (http://en.wikipedia.org/wiki/Unicode)? They will have you believe that Unicode requires you to use…
The goal of this video is to provide viewers with basic examples to understand and use pointers in the C programming language.
Video by: Grant
The goal of this video is to provide viewers with basic examples to understand and use while-loops in the C programming language.

803 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