From: Todd Benson <caduceass@...>
Date: 2008-03-11T02:48:52+09:00
Subject: Re: Sort hashes using values

On Mon, Mar 10, 2008 at 11:34 AM, Subbu <subramani.athikunte@gmail.com> wrote:
> Ruby automatically sorts hashes by keys, which means:
>
>  >> h = {"first"=>2,"second"=>1,"third"=>3}
>  => {"third"=>3, "second"=>1, "first"=>2}
>
>  How do I sort this by the values? So that I have:
>  {"second"=>1, "first"=>2, "third"=>3}

A hash, by nature, is not really sorted IIRC.  If you sort, you need
an Array object as a return value, which means using #sort_by...

h = Hash["first", 2, "second", 1, "third", 3]
h.sort_by {|k, v| v}

It will give you an array of arrays.

Todd