#为了适配输入的形式和时序输入，重写了"SparseDrive" 类的forward
Simple actuators without this capability are a bit like manual transmission cars that need to be shifted into reverse.，更多细节参见新收录的资料
Would something like this make you more likely to search for jobs there?，详情可参考新收录的资料
* - this.arr：存储每日股票价格（按调用next的顺序）