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https://issues.apache.org/jira/browse/MATH-1569?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17320002#comment-17320002
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Emmanuel Bourg commented on MATH-1569:
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The changes look good, I'm +1 for applying it.
{{System.arraycopy}} is notoriously faster than loops, others have already
extensively benchmarked it, don't bother checking it again.
https://stackoverflow.com/questions/18638743/is-it-better-to-use-system-arraycopy-than-a-for-loop-for-copying-arrays
> Manual array copy
> -----------------
>
> Key: MATH-1569
> URL: https://issues.apache.org/jira/browse/MATH-1569
> Project: Commons Math
> Issue Type: Sub-task
> Reporter: Arturo Bernal
> Priority: Minor
> Time Spent: 10m
> Remaining Estimate: 0h
>
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