Hey i have worked with graph theory before and this question i had made a solution very very very slow , so i am trying to find a fast solution , please help me , thnx in advanced , here goes quesiton:-
what have you tried till now? Also post your code to get some suggestions
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This is a two-part problem. First you have to determine if both the goal node and the start node are part of the same connected graph. You can do this with simple set theory operations.
Second, IFF the goal node and start node are part of the same connected graph, you need to find the least cost path between them. There are many possible ways to do this but the fastest one is probably going to be a bidirectional search.
Which part are you needing help with? (And which programming language are you using? I recommend an object-oriented language for set or graph theory problems.)
okay , i got it all and i m posting little more details .
i am using c++ , i planned to use BFS algorithm , but i am not sure , how to count the length , maybe its easy but i am not getting it though , i am a beginner , very beginner . So it would be nice , if someone could tell me code , or part of code , my last algorithm was using DFS algorithm so it was very slow , i hope you can now help me @cmdrsunshine .
Thankyou in advanced .
It can be solved by 2 parts.
- Using disjoint set data structure to find if start and end point belong to the same set.
- Using BFS to find the minimum number of steps.
hope this helps.