* @return {string} 移除k位后最小的数字（字符串形式）
if(h->ref--)return;
，详情可参考搜狗输入法2026
Трамп высказался о непростом решении по Ирану09:14
Study finds ChatGPT Health did not recommend a hospital visit when medically necessary in more than half of cases | ChatGPT Health performance in a structured test of triage recommendations