tomcha · June 23, 2016 03:35
diff --git a/recursion16.rb b/recursion16.rb
 list = [1, 3, 5]
 pro = Proc.new{|i|
  arr ||= []
  (0..i).each do |j|
    arr  << j
  end
  arr
 }

 def collect(list, pro)
  @arr ||= []
  if list.size == 0
    @arr
  else
    i = list.shift
 #    pro.call(i).each do |j|
 #      @arr << j
 #    end
    @arr += pro.call(i)
    collect(list, pro)
  end
 end

 p collect(list, pro)
	list = [1, 3, 5]
	pro = Proc.new{\|i\|
	arr \|\|= []
	(0..i).each do \|j\|
	arr << j
	end
	arr
	}

	def collect(list, pro)
	@arr \|\|= []
	if list.size == 0
	@arr
	else
	i = list.shift
	# pro.call(i).each do \|j\|
	# @arr << j
	# end
	@arr += pro.call(i)
	collect(list, pro)
	end
	end

	p collect(list, pro)
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