第19届肖邦国际钢琴比赛获奖名单公布后,王紫桐(左三)祝贺陆逸轩(左二)。图丨© Wojciech Grzedzinski
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。51吃瓜对此有专业解读
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)。
stack.pop(); // 弹出无效候选值,详情可参考快连下载-Letsvpn下载
优点: 梯度连续,优化更稳定。
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