需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
Consultant gynaecologist Prof Richard Smith, from Imperial College Healthcare NHS Trust, started researching womb transplantation more than 25 years ago and was present at Hugo's birth. He said "a huge team of people" had been involved in the process - from the transplant operation to the embryo transfer and the delivery itself.，详情可参考Line官方版本下载
res.push(valToGreater2.get(num));，更多细节参见谷歌浏览器【最新下载地址】
spreadsheets, databases, or APIs.。safew官方版本下载是该领域的重要参考