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https://issues.apache.org/jira/browse/SANDBOX-334?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Marco Speranza updated SANDBOX-334:
-----------------------------------

    Attachment: GraphColoringCrownGraphProblemFix.patch

Hi all, here my patch that resolves the bug. It contains also a tests case 
(named testCrownGraph() ) that shows the problem.

> [Graph] Bad coloring for crawn graph
> ------------------------------------
>
>                 Key: SANDBOX-334
>                 URL: https://issues.apache.org/jira/browse/SANDBOX-334
>             Project: Commons Sandbox
>          Issue Type: Bug
>          Components: Graph
>            Reporter: Marco Speranza
>         Attachments: GraphColoringCrownGraphProblemFix.patch
>
>
> The graphColoring algorithm fails for crown graph (see 
> [http://en.wikipedia.org/wiki/Crown_graph] for more details).
>  
>  

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