From: William James <w_a_x_man@...>
Date: 2007-01-07T04:05:08+09:00
Subject: Re: HOW-TO produce random numbers within a range?

Ruby N00bie wrote:
> Hello,
> Thanks for reading this.
> I am very new to Ruby and have been learning using a tutorial at
> http://pine.fm/LearnToProgram/
> by Chris (thanks Chris)
> After searching fairly thoroughly in forums and tutorials I found no
> answer to my problem.
> I have come to a point where i need to generate a random number within a
> range.
>
> I have learnt that rand(100) produces random numbers from 0 to 99 but i
> need to know how to set a minimum for the random number.
>
> Your help would be greatly appreciated.
>
> Thanks in advance, tckl.
>
> --
> Posted via http://www.ruby-forum.com/.

You don't need to be able to set a minimum.  You simply take what
rand() gives you and add an offset.

>> 25.times{ r = rand(10); print "#{ r } " }
5 1 0 5 4 3 5 0 4 0 7 8 6 8 6 9 7 1 7 9 9 3 5 7 5 => 25
>> 25.times{ r = rand(10); print "#{ r + 50 } " }
57 51 51 58 54 53 56 58 54 57 54 56 57 58 50 56 56 50 58 52 58 55 53 50
56 => 25