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From "Henri Yandell (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (LANG-680) StringUtils - Longest Common Substring / Longest common susequence
Date Thu, 21 Jul 2011 08:32:58 GMT

    [ https://issues.apache.org/jira/browse/LANG-680?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13068858#comment-13068858
] 

Henri Yandell commented on LANG-680:
------------------------------------

Digging into this, the easy API would be:

  public static CharSequence lcs(CharSequence, CharSequence)

That returns one of the longest common substrings; either the first or last found.

Variants would be to return CharSequence[], ie) all of them; and to implement this for N strings.
Leading us to:

  public static CharSequence[] lcs(CharSequence...)

> StringUtils - Longest Common Substring / Longest common susequence
> ------------------------------------------------------------------
>
>                 Key: LANG-680
>                 URL: https://issues.apache.org/jira/browse/LANG-680
>             Project: Commons Lang
>          Issue Type: New Feature
>          Components: lang.*
>            Reporter: Andrea Vacondio
>              Labels: LCS,, Longest, common, substring
>             Fix For: 3.x
>
>
> I recently needed to perform Longest commons substring on a collection of filenames and
I think it could be usefull to have it in StringUtils (I couldn't find any discussion about
it).
> Some detail here 
> http://en.wikipedia.org/wiki/Longest_common_substring
> and here
> http://en.wikipedia.org/wiki/Longest_common_subsequence_problem

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