cfc1020 · June 12, 2020 18:36
diff --git a/is_palindrome.rb b/is_palindrome.rb
 # @param {Integer} x
 # @return {Boolean}
 def is_palindrome(x)
  return false if x.negative?

  s = x.abs.to_s

  i = 0
  j = s.length - 1


  while i < j do
    return false if s[i] != s[j]

    i += 1
    j -= 1
  end

  true
 end
diff --git a/is_palindrome2.rb b/is_palindrome2.rb
 # @param {Integer} x
 # @return {Boolean}
 def is_palindrome(x)
  x.to_s == x.to_s.reverse
 end
	# @param {Integer} x
	# @return {Boolean}
	def is_palindrome(x)
	return false if x.negative?

	s = x.abs.to_s

	i = 0
	j = s.length - 1


	while i < j do
	return false if s[i] != s[j]

	i += 1
	j -= 1
	end

	true
	end