# File lib/quiz1/t/solutions/Niklas Frykholm/solitaire.rb, line 92 def sanitize(s) s = s.upcase s = s.gsub(/[^A-Z]/, "") s = s + "X" * ((5 - s.size % 5) % 5) out = "" (s.size / 5).times {|i| out << s[i*5,5] << " "} return out end