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Posted to issues@commons.apache.org by "Thomas Neidhart (JIRA)" <ji...@apache.org> on 2013/09/10 22:15:54 UTC

[jira] [Commented] (COLLECTIONS-431) Add useful collections from commons-graph

    [ https://issues.apache.org/jira/browse/COLLECTIONS-431?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13763442#comment-13763442 ] 

Thomas Neidhart commented on COLLECTIONS-431:
---------------------------------------------

Thanks for your effort!

There are some open questions though:

@DisjointSet:

 * it will require a unit test
 * how to integrate it into the collections framework / unit tests

@FibonacciHeap:

there is quite some discussion on stackoverflow about using a Fibonacci heap instead of the standard PriorityQueue (which is a balanced binary heap) of java.util, but the conclusion is mostly the same: fibonacci heaps have high asymptotic costs and can be tricky to implement. Thus prior to included such an implementation we need figures about the performance and very good test coverage.

                
> Add useful collections from commons-graph
> -----------------------------------------
>
>                 Key: COLLECTIONS-431
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-431
>             Project: Commons Collections
>          Issue Type: Improvement
>    Affects Versions: 4.0
>            Reporter: Thomas Neidhart
>             Fix For: 4.x
>
>         Attachments: COLLECTIONS-431.patch
>
>
> Commons-graph has support for DisjointSet and FibonacciHeap which could be of interest also for CC.

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