How to check if an appropriate enumerable is a palindrome

Question

Obviously, a hash would not work for this kind of test. Anyways, here's what I have so far:

module Enumerable
  def palindrome?
    arr = []
    self.reverse_each do |x|
      arr << x
    end
    self == arr
  end
end

Another idea I had was to cycle through arr and self element by element with a for loop to check.

Answer 1

module Enumerable
  def palindrome?
    a = to_a
    a == a.reverse
  end
end