From: SATO Seichi <seichi@...>
Date: 2002-02-07T21:48:25+09:00
Subject: Re: shuffle (all possible sequences)

This is anagram problem.

On Thu, Feb 07, 2002 at 07:42:36PM +0900, SHULTZ,BARRY (HP-Israel,ex1) wrote:
> Hi,
>  Your solution will test true ( 0, in your case )
> for "bbb".consists_of("abc").  Is that what you want?
> 
> Here's a different solution that will only return true if
> the two words have the exact same length and the 
> exact same letters:
> 
> def consists_of? (other)
>  a = self.split(//)
>  b = other.split(//)
>  a.sort == b.sort
> end
> 

faster to use unpack and sort

a = self.unpack("C*").sort!.pack("C*")
b = other.unpack("C*").sort!.pack("C*")

See also ruby-talk 8142.

-- 
SATO Seichi