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https://issues.apache.org/jira/browse/MATH-473?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gilles updated MATH-473:
------------------------
Fix Version/s: (was: 3.0)
3.1
Postponed due to the absence of an updated patch.
> Frequency: new option: NON-sorted
> ---------------------------------
>
> Key: MATH-473
> URL: https://issues.apache.org/jira/browse/MATH-473
> Project: Commons Math
> Issue Type: Improvement
> Affects Versions: 1.0, 1.1, 1.2, 2.0, 2.1
> Reporter: Dan Checkoway
> Fix For: 3.1
>
> Attachments: MATH-473.patch
>
>
> I have a request for enhancement on org.apache.commons.math.stat.Frequency.
> I would like to be able to specify that the the backing map NOT be sorted.
> Right now it uses TreeMap. I would like to have the option of specifying
> that sorting is not important, and would in fact hinder performance, and a
> plain old HashMap should be used instead.
> i.e. constructor such as:
> public Frequency(boolean sorted);
> If sorted is true, use a TreeMap. If sorted is false, use a HashMap. Is
> this feasible? I'd be happy to contribute a patch if that would help.
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