思路：单调递减栈，找「上一个比当前价格大的元素索引」。正序遍历，弹出所有 ≤ 当前价格的索引；跨度 = 当前索引 - 栈顶索引（栈空则为 当前索引 + 1）。
Credit: Samsung。关于这个话题，safew官方版本下载提供了深入分析
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They migrate thousands of kilometres to find stable sea ice during Antarctic summer to wait out what is called a "catastrophic moult" every year.
She added the experience had been "life changing" and that her children constantly worried about her becoming unwell again.，这一点在safew官方下载中也有详细论述
Израиль нанес удар по Ирану09:28