fuadsaud · November 17, 2014 02:48
diff --git a/columnar_transposition.rb b/columnar_transposition.rb
 PLAINTEXT = ARGV[0].gsub(/[^A-Za-z]/, '')
 KEY       = ARGV[1]

 p KEY
  .chars
  .cycle
  .take(PLAINTEXT.size)
  .zip(PLAINTEXT.chars)
  .reduce(Hash.new { [] }) { |acc, (key, char)| acc.merge(key => acc[key] + [char]) }
  .to_a
  .sort
  .flat_map(&:last)
  .join
	PLAINTEXT = ARGV[0].gsub(/[^A-Za-z]/, '')
	KEY = ARGV[1]

	p KEY
	.chars
	.cycle
	.take(PLAINTEXT.size)
	.zip(PLAINTEXT.chars)
	.reduce(Hash.new { [] }) { \|acc, (key, char)\| acc.merge(key => acc[key] + [char]) }
	.to_a
	.sort
	.flat_map(&:last)
	.join