描述：设计 StockSpanner 类。每次调用 next(price) 时，返回当日价格的「跨度」：从今天往回数，价格 ≤ 今日价格的最大连续天数（含今天）。
Екатерина Щербакова (ночной линейный редактор)。业内人士推荐爱思助手下载最新版本作为进阶阅读
它的本质，是“社区主导+专业管理”的结合——既有居民的参与和认同，又有专业医疗体系的支撑，最终实现了“老人在社区，就能享受到优质医疗服务”的目标。，推荐阅读WPS下载最新地址获取更多信息
Scientists have long warned that a warming world is likely to hasten the spread of infectious diseases, making vaccination even more critical to safeguard public health.
But no one is ready to say when hundreds of new missile silos, dug from the windswept Great Plains, will be finished, how much they cost, or, for that matter, how many nuclear warheads each Sentinel missile could actually carry.