# project

• ### Question

• I am working on my project which is map routing and we should deal with a graph and this graph should be filled from a text file

I made my graph which is an Adjacency List of list of list the first list of type vertex (which is a class) and the second of type edge (another class) , I have to make an algorithm that return the shortest path and I decided to make it with a dijekstra algorithm

My question is I want to implement the dijekstra algorithm using list of list and I don't know how to implement it using my list of list graph

Thursday, December 13, 2018 10:30 PM

### All replies

• Hello,

Check out the following GitHub Repo with example (there is C# and JavaScript so pick the right one)

https://github.com/mburst/dijkstras-algorithm

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Thursday, December 13, 2018 10:38 PM
• I am working on my project which is Map Routing , I am asked to implement a graph using adjacency list and fill it form a text file to get the data for the vertices and edges . I made my adjacency list from list of list the first list of type vertex (its a class) and the second one of type edge (another class) , then I have to get the shortest path for this graph and the most important factor is the time which is the weight of each edge .

I want to get the shortest path using dijekstra algorithm but I don't know how to implement it using list of list .

Thursday, December 13, 2018 10:44 PM
• i tried a lot to make Dijkstra algorithm works with adjacency list but i failed xD
Thursday, December 13, 2018 10:55 PM
• The usual way to do something like that is to build a graph, where each vertex node holds a list of its adjacent nodes.  Then, you traverse the graph starting at a node by putting the list of adjacent nodes, and the edge cost, into a queue.  For each node in that list, you add ITS adjacent nodes, except that you don't need to add any nodes you've already visited.  Eventually, all paths will either produce a cycle or reach your destination.

Tim Roberts | Driver MVP Emeritus | Providenza &amp; Boekelheide, Inc.

Friday, December 14, 2018 12:51 AM
• Hi Mary Mikhail,

Thank you for posting here.

For your question, if you want to get the shortest path using dijekstra algorithm c#, you could refer to the examples in the link below.

https://www.csharpstar.com/dijkstra-algorithm-csharp/

Best Regards,

Wendy

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• Proposed as answer by Monday, December 17, 2018 9:50 AM
Friday, December 14, 2018 6:56 AM