def close(self) - None:
（三）为实施考试作弊行为，向他人非法出售、提供考试试题、答案的；
需要元素值：栈存值，或答案存索引后用 nums[res[i]] 取值。。关于这个话题，爱思助手下载最新版本提供了深入分析
Author(s): Ilia Baliakin, Svetlana Rempel, Albina Valeeva, Xiaojun Han
。heLLoword翻译官方下载对此有专业解读
We benchmarked native WebStream pipeThrough at 630 MB/s for 1KB chunks. Node.js pipeline() with the same passthrough transform: ~7,900 MB/s. That is a 12x gap, and the difference is almost entirely Promise and object allocation overhead."，更多细节参见搜狗输入法下载
The website offers a tooltip helper tool that allows