smart parsing ? (i guess yes)

text = """Rubular is a Ruby-based regular expression editor. It's a handy way to test regular expressions as you write them.

To start, enter a regular expression and a test string. Or you can try an example.
"""
tes = "st"
rtext = text.scan(/[#{tes}]+/).sort_by{|e| e.size}[-1]
puts tes + ", did you mean? " + text.split(" ").collect{|text| text if text.downcase =~ %r"^#{rtext}"}.compact[-1]
puts "done"

text = """Rubular is a Ruby-based regular expression editor. It's a handy way to test regular expressions as you write them.

To start, enter a regular expression and a test string. Or you can try an example.
"""
tes = "eprestion"
tlist = text.split(" ").collect{|text|
    rtext = text.scan(/[#{tes}]+/).sort_by{|e| e.size}[-1]
    if rtext != nil
        [text, rtext]
    end
    }.compact
puts tes + ", did you mean? " + tlist.sort_by{|te, rt| rt.size}[-1][0]
puts "done"

class AI
    def initialize
        @text = {"apa kabar"=>["kabar baik"],
            "siapa kamu"=>["aku bot", "hi aku bot"],
            "selamat pagi"=>["pagi!", "pagi juga", "selamat pagi"]
            }
    end
    def talk(input)
        output = []
        @text.each do |text, response|
            if input == text
                return response
            elsif text.include? input
                return response
            else
                rtext = text.scan(/[#{input}]+/).sort_by{|e| e.size}[-1]
                if rtext != nil
                    output << [response, rtext]
                end
            end
        end
        return output.sort_by{|te, rt| rt.size}[-1][0]
    end
end
ai = AI.new
puts ai.talk("apa kabar").sample
puts "done"