Последние новости
2、新的鸿沟出现了从移动互联网到当下的AI时代，技术飞速迭代，老年人似乎总是每一轮技术浪潮里的最后一朵浪花。
，详情可参考WPS官方版本下载
需要索引（如算距离、下标）：栈存索引，用 nums[stack.at(-1)] 取值比较。
There are few things sadder than the end of a close friendship. Whether it happens in a sudden moment of betrayal or after years of gradual separation, the feelings of loss can stay with you for a lifetime.