array_custom_splite

array_custom_splite.rb

class Array
  def custom_split &block
    tmp = self.each_with_index.inject({}) do |hash, (obj, index)|
     if block.call(obj) || (index == 0)
        hash[index] = []
     else
       hash[hash.keys.last] << obj
     end
     hash
    end.map{|h| (h[0] = self[h[0]], h[1]=h[1]).flatten}

    tmp.each_with_index do |item, i|
      if item.size == 1 && (i< (tmp.size-1)) && block.call(item.first)
        tmp[i+1].unshift(item).flatten!
        item.pop
      end
    end.delete([])
    tmp
  end
end

a = [8,9,8,"muti1", 'muti11', 3,3,3,3,3,'muti2','muti22',4,4,4,4,4]

p a.custom_split{|x| x =~ /[^\d]+/}