Ruby Challenge 4: Puns, Palindromes and Parrots

gistfile1.rb

# Puns, Palindromes and Parrots
# Challenge 4: http://www.therubygame.com/challenges/4/submissions

#str = "abacdfgdcabaypqqpy" # 324 171 163
#str = "natarajan" # 81 45 42 # "ata"
str = "ghjiiooiijplr"
# desired output "ypqqpy"

def find_longest_palindrome(string)
  p = ""
  s = string
  l = s.length - 1
  0.upto l do |x|
    l.downto x do |y|
      a = s[x,y]
      if a == a.reverse && a.length > p.length
        p = a
        break
      end
    end
  end
  p
end

puts "i/p: #{str}"
print "o/p: ", find_longest_palindrome(str)