Easy Tally Challenge Solution

easyTally.rb

# https://www.reddit.com/r/dailyprogrammer/comments/8jcffg/20180514_challenge_361_easy_tally_program/

players = {}

ARGV[0].split(//).each do |char|
  name = char.downcase
  players[name] = 0 if !players[name]
  players[name] -= 1 if char == char.upcase
  players[name] += 1 if char == char.downcase
end

players.sort_by { |index| index[1] }.reverse!.each do |player|
  print player[0], ': ', player[1], "\n"
end