Determining whether one array contains the contents of another array in ruby

Question

In ruby, how do I test that one array not only has the elements of another array, but contain them in that particular order?

correct_combination = [1, 2, 3, 4, 5         


        

Answer 1

This is the best I could come up with. All the return calls are a bit ugly, but it should be quicker than doing a string comparison if it's large arrays.

class Array
  def same?(o)
    if self.size == o.size
      (0..self.size).each {|i| return false if self[i] != o[i] }
    else
      return false
    end

    return true
  end
end

a = [1,2,3,4,5]
b = [1, 5, 8, 2, 3, 4, 5]
c = [1, 2, 6, 4, 5]

puts a.same?(a.reverse) # => false
puts a.same?(a) # => true
puts a.same?(b) # => false
puts a.same?(c) # => false