built-in analytics tool to track the performance of created content.
示例：nums = [2,1,2,4,3] → res = [4,2,4,-1,-1]。
。关于这个话题，服务器推荐提供了深入分析
（八）当场收缴罚款不出具专用票据或者不如实填写罚款数额的；
new ReadableStream({
innovations like the "posting machine." These did exactly what they promised: