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From "Hudson (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (COLLECTIONS-404) Adding an implementation of Eugene Myers difference algorithm
Date Thu, 26 Jul 2012 20:13:34 GMT

    [ https://issues.apache.org/jira/browse/COLLECTIONS-404?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13423415#comment-13423415
] 

Hudson commented on COLLECTIONS-404:
------------------------------------

Integrated in commons-collections #68 (See [https://builds.apache.org/job/commons-collections/68/])
    Added COLLECTIONS-404 to changes.xml. (Revision 1366176)

     Result = UNSTABLE
tn : http://svn.apache.org/viewvc/?view=rev&rev=1366176
Files : 
* /commons/proper/collections/trunk/src/changes/changes.xml

                
> Adding an implementation of Eugene Myers difference algorithm
> -------------------------------------------------------------
>
>                 Key: COLLECTIONS-404
>                 URL: https://issues.apache.org/jira/browse/COLLECTIONS-404
>             Project: Commons Collections
>          Issue Type: Improvement
>          Components: Collection
>    Affects Versions: 3.2.1
>         Environment: all
>            Reporter: Luc Maisonobe
>            Assignee: Luc Maisonobe
>            Priority: Minor
>             Fix For: 4.0
>
>         Attachments: commons-collections-difference-v2.patch, commons-collections-difference.patch,
comparator.zip
>
>
> The difference algorithm aims at comparing two sequences of objects and return an "edit
script" which represents how one can transform the first sequence into the second sequence.
The script describes the various insert object, delete object and keep object commands. The
script is guaranteed to be the shortest possible in terms of number of commands.
> From the script, one can either extract longest common sub-sequences (i.e. how similar
the sequences are) or on the contrary the needed changes (i.e. how different the sequences
are).

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