Character Counting

count_letters.rb

def char_count(list)
  letters = {}
  list.each do |word|
    word.split('').each { |letter| letters.has_key?(letter) ? letters[letter] += 1 : letters[letter] =1}
  end
  letters = letters.sort_by {|a,b| b}
  letters.reverse!
  print letters
end

def letter_index(sentence)
  indices = Hash.new {|k, i| k[i] = []}
  sentence.split('').each_with_index do |letter, index|
    indices[letter].push(index)
  end
  indices
end

puts char_count(['apples', 'oranges', 'hipsters', 'are', 'same'])