Frequency.rb

#!/usr/bin/env ruby

def main(arguments)
	word = 'default'
	if arguments.length > 0
		word = arguments[0]
	end

	hashes = Hash.new(0)
	word.each_char { |c| hashes[c] += 1 }

	sorted_hashes = hashes.sort_by {|k, v| -v}
	puts 'Letter frequencies for "' + word +'":'
	puts "letter\tcount"
	sorted_hashes.each { |entry| puts entry[0] + "\t" + entry[1].to_s }
end



if __FILE__ == $0
	main(ARGV)
end