If you negate the values, then it will loop on forever in a cycle, as adding more negative values *seems* to give shorter path.
2010/1/15 chitta koushik <[email protected]> > How abt negating values and using same single source shortest path algo ? > > 2010/1/15 saltycookie <[email protected]> > >> longest path is NP-hard >> >> 2010/1/11 Johan <[email protected]> >> >>> Ok, so I know that Dijkstra can be used to solve the single-source >>> shortest path problem quite efficiently. I however need to find the >>> single source longest path through a graph. Can Dijkstra be used for >>> this if I transform the edge lengths so that the longest edge is now >>> the shortest etc etc. Does anybody have any references to work done >>> which is similar to the this longest path problem? >>> >>> >>> -- >>> You received this message because you are subscribed to the Google Groups >>> "Algorithm Geeks" group. >>> To post to this group, send email to [email protected]. >>> To unsubscribe from this group, send email to >>> [email protected]<algogeeks%[email protected]> >>> . >>> For more options, visit this group at >>> http://groups.google.com/group/algogeeks?hl=en. >>> >>> >>> >>> >> >> >> -- >> 此致 >> 敬礼！ >> >> 林夏祥 >> >> -- >> You received this message because you are subscribed to the Google Groups >> "Algorithm Geeks" group. >> To post to this group, send email to [email protected]. >> To unsubscribe from this group, send email to >> [email protected]<algogeeks%[email protected]> >> . >> For more options, visit this group at >> http://groups.google.com/group/algogeeks?hl=en. >> >> > > -- > You received this message because you are subscribed to the Google Groups > "Algorithm Geeks" group. > To post to this group, send email to [email protected]. > To unsubscribe from this group, send email to > [email protected]<algogeeks%[email protected]> > . > For more options, visit this group at > http://groups.google.com/group/algogeeks?hl=en. > >--
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