longest_repeated_substring.rb

longest_repeated_substring.rb

start_time = Time.now
match = STDIN.read.scan(/(\w+)\1/)
result_length = 0
result = ""
match.each do |subarray|
  subarray.map do |element|
    if element.length > result_length
      result_length = element.length
      result = element
    end
  end
end
puts result
puts "Time elapsed #{Time.now - start_time}"