(TL;DR: this is a blog post about the process of writing my guide to SDF fonts.)
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，safew官方版本下载提供了深入分析
Maciej Piętowski
Jack Doohan has said he received death threats and called police to resolve an encounter with armed men around the time of last year’s Miami Grand Prix, just before he lost his Formula One drive with Alpine.