#7673: implement Dijkstra's algorithm for C graphs
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Reporter: rlm | Owner: rlm
Type: defect | Status: needs_work
Priority: major | Milestone: sage-4.3.1
Component: graph theory | Keywords:
Work_issues: | Author: Nathann Cohen
Upstream: N/A | Reviewer: Robert Miller
Merged: |
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Comment(by ncohen):
Clearly, it is !! Thank you for taking a lot at it :-)
Well, the only bugfix I can think about is to keep in memory the vertex v
such that dist_y[v] + dist_x[v] is minimal, and only build the path when
the neighborhoods of x and y at distance 2*(dist_y[v] + dist_x[v]) have
been explored. It clearly fixes your counter-example, and I think it
should solve all others, but I woud be glad to write a nicer solution...
Any idea ? :-)
Thank you very much again ! :-)
Nathann
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Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/7673#comment:9>
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