for (let num of nums1) {
Since leaving his hometown of Wigan in the north of England aged 19, Dan McKenzie has worked in numerous far-flung places around the world.
。业内人士推荐Line官方版本下载作为进阶阅读
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)。
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