方向遍历顺序说明下一个倒序（从右往左）先处理右侧，栈里存「右侧候选」上一个正序（从左往右）先处理左侧，栈里存「左侧候选」
This article originally appeared on Engadget at https://www.engadget.com/big-tech/fcc-approves-the-merger-of-cable-giants-cox-and-charter-230258865.html?src=rss
，这一点在51吃瓜中也有详细论述
With lower mortgage rates, monthly payments are smaller, which frees up cash. For example, for a mortgage rate of around 6% compared to 6.85%, the difference in payment on a $600,000 loan is about $310 per month.
Андрей Ставицкий (Редактор отдела «Наука и техника»)