ruby冒泡算法删除店铺下的重复评论

 Shop.each do |shop|
     if !shop.comments.blank?
     n = shop.comments.length
     for i in 0..n-1
         for j in i+1..n-1
             if shop.comments[i].content == shop.comments[j].content
                 shop.comments[j].destroy
             end
         end
     end
     end
 end     

以上为ruby冒泡算法删除店铺下的重复评论代码