print out characters according to their relative frequencies

dist.rb

#!/usr/bin/env ruby

inputs = {
  'a' => 18,
  'b' => 13,
  'c' => 9
}

total = inputs.values.inject{|sum,x| sum + x }

counts = inputs.dup

i = 0
string = []
while i < total
  inputs.each do |k, v|
    counts[k] += v
    if counts[k] >= total
      string << k
      counts[k] -= total
      i += 1
    end
  end
end

puts string.join('')

puts "\nLetter: Count (Expected)"
inputs.each do |k, v|
  puts "#{k}: #{v} (#{string.count(k)})"
end