Assassins

#!/usr/bin/ruby
# Assassin - Random and fair pairing for a game of assassin of any size (defaults to 10)
# Takes number of players from args

num_players = ARGV[0].to_i == 0 ? 10 : ARGV[0].to_i

killers = (0..num_players-1).to_a
targets = killers.shuffle

puts "killers: #{killers.inspect}"
puts "targets: #{targets.inspect}"

killers.each do |killer|
  target = targets[killer]
  if killer == targets[killer]
    puts "#{killer} has him/herself"
  elsif targets.index(killer) == target
    puts "#{killer} has #{target} and #{target} has #{killer}"
  end
end