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。
Hillary Clinton said that one Republican lawmaker asked her a line of questions about “vile, bogus conspiracy theories.”
，这一点在WPS下载最新地址中也有详细论述
to an IBM 3705 Communications Controller running the Network Control Program
Alexey Milovidov Co-founder & CTO, ClickHouse