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。
数据显示,2025年中国自动驾驶领域总投入预计达700-750亿元,同比增长40%。但整个中国汽车行业利润率只有4.1%,处于历史低点。利润增长赶不上研发投入增长,尤其对于还在亏损中的车企来说,L3还是L4?曾经是两者都要、循序渐进,现在成了二选一的选择题。
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A federal court will conduct a search of devices seized from a Washington Post reporter after a magistrate judge decided yesterday that the Department of Justice cannot be trusted to perform the search on its own.
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