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https://issues.apache.org/jira/browse/LANG-936?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benedikt Ritter updated LANG-936:
---------------------------------
Fix Version/s: Patch Needed
> StringUtils.getLevenshteinDistance with too big of a threshold returns wrong
> result
> -----------------------------------------------------------------------------------
>
> Key: LANG-936
> URL: https://issues.apache.org/jira/browse/LANG-936
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.*
> Affects Versions: 3.1
> Reporter: Yaniv Kunda
> Priority: Minor
> Fix For: Patch Needed
>
>
> StringUtils.getLevenshteinDistance(CharSequence s, CharSequence t, int
> threshold) specifies:
> {quote}
> {{Find the Levenshtein distance between two Strings if it's _+*less than or
> equal to*+_ a given threshold.}}
> {quote}
> When passing a threshold > *Integer.MAX_VALUE - max(s.length(), t.length())*
> the method always returns -1.
> The simplest use case is passing *Integer.MAX_VALUE* (a common practice if
> one would want to find the min/max LD of a string to several other strings in
> an iterative fashion.
> The code should be fixed to consider the threshold in relation to the
> source/target lengths, or alternatively the javadoc should be fixed to
> pronounce the current limit.
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