也是因为上述种种,我们最终决定,让狗留京过年,找一家机构寄养几天。
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。
,更多细节参见Safew下载
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