def find_longest_palindrom s1, size
    longest = ""

    s1.size.times do |start|
        break if start + size > s1.size
        s2 = s1[start, size].reverse
        if s1.include? s2
            puts s2
            exit
        end
    end

    find_longest_matching s1, size - 1
end

find_longest_palindrom text, text.length