def acronymizer(sentence)
  # séparer les mots de la phrase
  words = sentence.split(" ")

  # prendre la 1ere lette de chaque mot + majuscule
  first_letters = []
  words.each do |word|
    first_letters << word[0].upcase
  end

  # les rassembler
  first_letters.join

end

puts acronymizer("mort de rire") # => "MDR"
puts acronymizer("save our souls") # => "SOS"

def rock_paper_scissors
  solutions = %w(rock paper scissors)
  human_play = nil

  while true
    until solutions.include?(human_play)
      puts "Your choice (rock paper scissors)"
      print "> "
      human_play = gets.chomp
      return if human_play == ""
    end

    machine_play = solutions.sample
    puts machine_play

    score = "loose"
    score = "match null" if human_play == machine_play
    score = "win" if solutions[solutions.index(human_play) - 1] == machine_play
    # score = "win" if human_play == "paper" && machine_play == "rock"
    # score = "win" if human_play == "scissors" && machine_play == "paper"
    # score = "win" if human_play == "rock" && machine_play == "scissors"

    puts score

    human_play = nil
  end

end

rock_paper_scissors