Array sort with Ruby

order_array.rb

def new_sort(left_sorted, right_sorted)
  ordered_array = []
  left = 0
  right = 0

  loop do
    break if right >= right_sorted.length and left >= left_sorted.length

    if right >= right_sorted.length or (left < left_sorted.length and left_sorted[left] < right_sorted[right])
      ordered_array << left_sorted[left]
      left += 1
    else
      ordered_array << right_sorted[right]
      right += 1
    end
  end

  ordered_array
end
 
ary1 = [1,3,5,7]
ary2 = [2,4,6,8]
puts new_sort(ary1, ary2)