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List:       ruby-talk
Subject:    Re: (mandriva,eclipse) extract digits from fixnums
From:       7stud -- <bbxx789_05ss () yahoo ! com>
Date:       2009-04-30 12:58:23
Message-ID: 9aa44fc63929ffd31b24cb553883bcb0 () ruby-forum ! com
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Olivier Lolveley wrote:
> hi,
> 
> I want to do a basic thing but without succes:
> if a=1232, let nb_nb=4 (the number of digits)
> for i from 1 to nb_nb, I want the following results:
> i=1 => res=1 (first digit of a) and NOT the number 01 (with a zero in
> front of the 1)
> i=2 => res=2 (same thing)
> i=3 => res=3
> i=4 => res=2
> 
> I tried a few things, like convert the number in array (it seems to keep
> the "0" in the result)...
> 
> do you have a solution?
> 

It's not clear to me what you want to do, but maybe this will help:

a=1232
str = a.to_s
p str

--output:--
"1232"

digits = []
str.length.times do |i|
  digits << str[i, 1]
end

p digits

--output:--
["1", "2", "3", "2"]

> res=1 (first digit of a) and NOT the number 01

1 and 01 are the same *number*.
-- 
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