From: Erik Terpstra <erik@...>
Date: 2005-11-26T00:52:27+09:00
Subject: Re: recursion

Or 'a'..'zzz' if you want every combination 'up to' 3 characters.

Erik Terpstra wrote:
> ('aaa'..'zzz').to_a
> 
> Cheers,
> 
> Erik.
> 
> cyberco wrote:
> 
>>I'm trying to print every combination of three characters from the
>>range (a..z). I thought recursion would be the most elegant solution,
>>but that got me quite confused :)  Any suggestions? Here's my
>>(erronous) attempt:
>>
>>________________________
>>
>>def addChar(str, level)
>>    ('a'..'z').each {|c|
>>        if level == 2
>>            puts str + c
>>        else
>>            str += c
>>            addChar(str, level + 1)
>>        end
>>    }
>>end
>>
>>addChar("", 0)
>>