Strict no-logging policy
* @param arr 待排序数组
，推荐阅读WPS下载最新地址获取更多信息
Towerborne was originally envisioned as an always-online MMO-lite action RPG brawler. Players would group together with their friends in a shared social space known as The Belfry. From there, players would venture out to the hexagonal world map and enter into 2.5D side-scrolling brawler combat missions. Loot, quests, and an ever-expanding world map provide a compelling "just one more" gameplay loop. The live-service structure meant the game would be ever-changing and expanding with new content and features continuously releasing over time.，推荐阅读91视频获取更多信息
思路：倒序单调栈。弹出所有 ≤ 当前身高的元素（这些人都能被看到），count 为弹出数量；若栈非空，还能看到栈顶（第一个更高的人），故 +1。能看到的人数 = count + (栈非空 ? 1 : 0)。，详情可参考谷歌浏览器【最新下载地址】