描述:给定字符串 num(非负整数)和整数 k,移除 k 位数字,使剩余数字最小。以字符串形式返回(不含前导零)。
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技术本身不是目的,解决问题才是。。体育直播是该领域的重要参考
全国人大机关有关负责同志参加了宣誓活动。
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