class Matchscore

# File lib/matchscore.rb, line 4
def self.winner a_odds=50, number_of_games=3
  a_wins = 0
  z_wins = 0
  game_number = 1
  while a_wins < (number_of_games+1)/2 && z_wins < (number_of_games+1)/2
    result = Random::rand 100
    if result < a_odds
      a_wins += 1
      puts "A wins game #{game_number} (#{result})"
    else
      z_wins += 1
      puts "Z wins game #{game_number} (#{result})"
    end
    game_number += 1
  end
  if a_wins > z_wins
    puts "A wins #{a_wins} games to #{z_wins}"
    winner = 'A'
  else
    puts "Z wins #{z_wins} games to #{a_wins}"
    winner = 'Z'
  end
  winner
end