triple.rb

def solve(*args)
  return nil unless args.size == 6
  player_a = args.slice(0, 3)
  player_b = args.slice(3, 3)

  a_score = 0
  b_score = 0

  (0..2).each do |i|
    case player_a[i] <=> player_b[i]
    when 1
      a_score += 1
    when -1
      b_score += 1
    end
  end

  [a_score, b_score]
end

puts solve(0, 1, 2, 0, 1, 2).join(' ')
puts solve(1, 1, 1, 0, 0, 0).join(' ')
puts solve(0, 0, 0, 1, 1, 1).join(' ')

def winner(a, b)
  case a <=> b
  when 1
    :a
  when -1
    :b
  else
    :tie
  end
end

def solve2(*args)
  return ["No scores"] unless args.size.even? && !args.size.zero?
  midpoint = args.size / 2

  games = []

  0.upto(midpoint - 1).each do |i|
    games << [
      args[i],      # player A
      args[i + midpoint]   # player B
      ]
  end

  scores = { a: 0, b: 0, tie: 0 }

  games.each do |a, b|
    scores[winner(a, b)] += 1
  end

  [
    scores[:a], scores[:b]
  ]
end

puts "solution #2"
puts solve2.join(' ')
puts solve2(0, 1).join(' ')


puts solve2(0, 1, 2, 0, 1, 2).join(' ')
puts solve2(1, 1, 1, 0, 0, 0).join(' ')
puts solve2(0, 0, 0, 1, 1, 1).join(' ')

puts solve2(0, 1, 0, 1, 0, 1, 9, 9, 9, 10).join(' ')