From: Daniel Sheppard <daniels@...>
Date: 2006-10-12T13:00:47+09:00
Subject: Re: Counting Frequency of Values in an Array (And Sorting by Frequency?)

items = Hash.new(0)
["a","a","a","b","c","c"].each do |i|
	items[i] += 1
end
items.sort_by {|key,value| -value}.each do |key, value|
	puts "#{a}:#{b}"
end

Slightly less horrific?

> and.. so you're aware.. my hacky code was something like this:
> 
> items = {}
> ["a", "a", "a", "b", "c", "c"].each do |i|
>    if items.include? i
>      items[i] += 1
>    else
>      items[i] = 1
>    end
> end
> 
> items.sort {|a,b| a[1]<=>b[1]}.reverse.each do |a, b|
> 	puts a + ":" + b.to_s
> end
> 
> 
> horrific eh?