Bubble Sort program in ruby

bubble_sort.rb

# bubble_sort.rb
#
# $ ruby bubble_sort.rb
# [1, 2, 3, 4, 5, 6, 7, 8]

def bubble_sort(array)
  for i in 0..array.length - 1
    for j in 0..array.length - 2
      if array[j] > array[j+1]
	array[j],array[j+1] = array[j+1],array[j]
      end
    end
  end
end

array = [6,5,3,1,8,7,2,4]
bubble_sort array
print array