def self.print_stats
total = (@found.length+@not_found.length).to_f
puts "=================== Statistics ==================="
puts "Lines : " + @lines_counter.to_s
puts "Arabic tokens : " + @not_arabic_tokens_counter.to_s
puts "Non-arabic tokens : " + @not_arabic_tokens_counter.to_s
puts "Words found : " + @found.length.to_s + " (" + (((100*(@found.length*100 / total)).round())/100.0 ).to_s+ "%)"
puts "Words not found : " + @not_found.length.to_s + " (" + (((100*(@not_found.length*100 / total)).round())/100.0 ).to_s + "%)"
puts "=================================================="
end