思路：单调递增栈 + k 控制删除次数。高位越小整体越小，遇更小数字时弹出栈顶大数（仅当 k0）；栈空且当前为 0 则跳过（避免前导零）；若遍历完 k 仍0，从末尾再删 k 位。
Cruz isn't shying away from his family connections. "Nice T-shirt," he remarked to an audience member who was wearing a top with "POSH" in big letters with a photo of his mum in her Spice Girls pomp.
，这一点在服务器推荐中也有详细论述
void*page_alloc(unsigned long long bytes) {，这一点在搜狗输入法下载中也有详细论述
A new California law says all operating systems, including Linux, need to have some form of age verification at account setup