Hi,
How to generate rand (random number) between two numbers?
I mean not between 0 and some number. It should be between some number (not 0) and some number.
Sincerely,
Asset
Hi,
How to generate rand (random number) between two numbers?
I mean not between 0 and some number. It should be between some number (not 0) and some number.
Sincerely,
Asset
How to generate rand (random number) between two numbers?
I mean not between 0 and some number. It should be between some number (not 0) and some number.
def range_rand(min,max)
min + rand(max-min)
end
This is the generally utility function I use. Throw in srand with a seed if you're using it for something related to security.
Regards,
Chris White
http://www.twitter.com/cwgem
Also you can mod the number by the cardinality of your range and then add
your lower bound.
On Mon, Sep 19, 2011 at 12:46 PM, Chris White <cwprogram@live.com> wrote:
>
> How to generate rand (random number) between two numbers?
> I mean not between 0 and some number. It should be between some number
(not 0) and some number.def range_rand(min,max)
min + rand(max-min)
endThis is the generally utility function I use. Throw in srand with a seed if
you're using it for something related to security.Regards,
Chris White
http://www.twitter.com/cwgem
That's not a workable approach:
09:56:29 Temp$ ruby19 -e 'p rand'
0.13646702557098767
So you need to use rand with an integer argument - and if you do that
there is no point in picking another value than the range size.
You'll end up with the solution Chris proposed.
Kind regards
robert
On Mon, Sep 19, 2011 at 7:34 PM, Karch <dimeneira@gmail.com> wrote:
Also you can mod the number by the cardinality of your range and then add
your lower bound.
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/
My bad. I assumed errantly that ruby's rand would default return a rand
number bounded by int size.
Too much C++ for me
Thanks for the correction!
In Christ,
Karch
On Tue, Sep 20, 2011 at 4:02 AM, Robert Klemme <shortcutter@googlemail.com>wrote:
On Mon, Sep 19, 2011 at 7:34 PM, Karch <dimeneira@gmail.com> wrote:
> Also you can mod the number by the cardinality of your range and then add
> your lower bound.That's not a workable approach:
09:56:29 Temp$ ruby19 -e 'p rand'
0.13646702557098767So you need to use rand with an integer argument - and if you do that
there is no point in picking another value than the range size.
You'll end up with the solution Chris proposed.Kind regards
robert
--
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/