LAN party's ping pong tournament seeds.rb

#!/usr/bin/env ruby

level1 = %w{ Roger Jorge Ferran Bernat }.shuffle
level2 = %w{ Victor Albert Gorka Alex }.shuffle
level3 = %w{ Dario Jon Marc Cesar }.shuffle
level4 = %w{ Txell Eliza Pablo Daniel }.shuffle

4.times do |group_i|
  group_players = [
    level1[group_i],
    level2[group_i],
    level3[group_i],
    level4[group_i]
  ]

  puts "Group #{group_i+1}: #{group_players.join(', ')}"
end