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）。
Taking Action Today。WPS官方版本下载是该领域的重要参考
，这一点在旺商聊官方下载中也有详细论述
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“If your goal is to get development done, providing as much detail and tutorializing and onboarding processes, making that as simple as possible is going to get you your best results,” said Mort. “Because, again, if you aren’t gaining devs, you’re losing devs.”