Ruby实现冒泡排序

 1 def bubble_sort(array)

 2     return array if array.size < 2

 3

 4     (array.size-2).downto(0) do |i|

 5         (0..i).each do |j|

 6             array[j],array[j+1] = array[j+1],array[j] if array[j] >= array[j+1]

 7         end

 8     end

 9

10     return array

11 end

12

13 a = [12,42,1,25,32,63,18]

14 p bubble_sort(a)

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