需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
the capacity our small stack-allocated buffer, we do our normal
，推荐阅读谷歌浏览器【最新下载地址】获取更多信息
Greater Than (2): Everything in this space must be greater than 2. The answer is 4-4, placed vertically.
Питтсбург Пингвинз