Will guess in the dark but would boxing come into play here?

> On 10 Jun 2015, at 21:03, Ritchie Cai <ritchie...@gmail.com> wrote:
> 
> I'm working on a java array of double with 1280000 elements. I need the max 
> and min values of the array. So I initially tried areduce and loop, both 
> gives runs around 20 seconds. But when try (apply max (vec array)) I get 
> result under 90 ms.
> Can anyone explain why there is such a big difference?
> Also if want to iterate large java array like this to do some other 
> operations, e.g. convolution, what's the best way to go? Is there another 
> fast way to iterate through array or do I need to convert array into vector?
> 
> Thanks
> Ritchie
> 
> 
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