From: Alex Gutteridge <alexg@...>
Date: 2011-02-07T20:59:37+09:00
Subject: Re: making hash key from arrays

 On Mon, 7 Feb 2011 20:47:45 +0900, Arihan Sinha wrote:
> Hi All,
>
> I've two arrays,
>
> keys = [300,300,301,301,301,302,302]
>
> values = [1, 2,  1,  3,  4,  3, 4]
>
> both the arrays have equal size.
>
> I need to create a hask
>
> hsh = {"300" =>["1","2"],"301" => ["1","3","4"],"302"=>["3","4"]}
>
> Could any one please put the ruby code for this.
>
>
> Cheers
> A

 hsh = Hash.new{|h,k| h[k]=[]}
 keys.zip(values).each{|k,v| hsh[k] << v}

-- 
 Alex Gutteridge