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Posted to issues@commons.apache.org by "Jeffrey Barnes (JIRA)" <ji...@apache.org> on 2013/03/03 04:51:13 UTC
[jira] [Updated] (COLLECTIONS-433) TreeList.addAll() complexity
[ https://issues.apache.org/jira/browse/COLLECTIONS-433?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Jeffrey Barnes updated COLLECTIONS-433:
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Attachment: COLLECTIONS-433.v2.patch
I have opened a new issue for the {{TreeListIterator}} bug, COLLECTIONS-447, per your suggestion, which includes a test case and a patch. I am attaching a new patch here that (1) replaces {{ArrayStack}} with an ordinary Java 5 {{Stack}} and (2) omits the {{TreeListIterator}} fix. However, this bug should now be considered dependent on COLLECTIONS-447, since this patch will cause a unit test to fail unless the {{TreeListIterator}} patch is applied first.
> TreeList.addAll() complexity
> ----------------------------
>
> Key: COLLECTIONS-433
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-433
> Project: Commons Collections
> Issue Type: Improvement
> Affects Versions: 3.2.1
> Reporter: Adrian Nistor
> Attachments: COLLECTIONS-433.patch, COLLECTIONS-433.v2.patch
>
>
> "TreeList.addAll(Collection coll)" has a higher complexity than
> necessary when "coll" is a "TreeList" object (because "addAll" just
> adds one element at a time). This can be done in just O(N) as
> described for example here:
> http://stackoverflow.com/questions/4458489/merging-2-diferent-avl-trees
> Are there any plans to improve this?
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