I’ve been using the Beeper chat consolidation app since I learned about it shortly before it blew up in tech news. It helps me in a couple of ways. It enables me to use Facebook, Instagram, LinkedIn, X, and Discord direct messaging on my phone without having any of those apps installed. And it allows me to easily get Signal and WhatsApp messages across multiple devices, despite both services’ limited multidevice support.
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）。
。关于这个话题，爱思助手下载最新版本提供了深入分析
This is relatively small. A typical on-shore wind turbine generates 2-3 megawatts.
"It provides the propulsion that Orion needs to get us to the Moon."