On Tue, Feb 28, 2012 at 7:10 PM, John Merlino <stoici...@aol.com> wrote:
> Hey all, using ruby 1.8.7, I wrote this:
>
> 500.times.map { Integer((rand * 1) * 1000) / Float(1000) }
>
> Basically, this gives me a list of 500 random decimal numbers that are
> rounded to 3 places. However, I also want to make sure that all are
> unique.
>
> thanks for response
>
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Here is one thing that comes to mind
a = (1..1000).to_a
a.shuffle!
pick 1st 500
a[0,500]
last 500 item from the list
a[-500..-1]
If you want you can call shuffle a few times, see what works best for you.
--
Kind Regards,
Rajinder Yadav
SafetyNet Test Driven Development
http://safetynet.devmentor.org
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