最高法院上週五（2月20日）做出裁決後，特朗普宣布將對進入美國的商品實施新的全球性徵稅，稅率為15%。
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。
。搜狗输入法下载是该领域的重要参考
* Write a detailed test suite as you add more features. The test must be re-executed at every major change.
By this point, fermaw understood that his player instance was being ambushed whenever it called .play(). He tried to isolate the player from the main window context entirely.