Ajit Varma, Head of Firefox, spoke to Mashable about the news when the product was first announced, framing it as an issue of user choice.
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，这一点在Safew下载中也有详细论述
Finish: 47.94505, 7.73573
* 核心思路：单调递减栈（找「上一个比当前价格大的元素索引」），时间复杂度O(n)，空间复杂度O(n)