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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Not only will Koofr Cloud Storage save you a fortune in the long run — goodbye monthly cloud storage fees — but it also offers much better privacy. Your files will be end-to-end encrypted, so they won’t be accessed by anyone, including the company itself. When you need them, Koofr’s user-friendly interface makes it easy to grab from a smartphone, computer, or via WebDAV.。搜狗输入法2026对此有专业解读
It's trusted by 50,000+ marketers for creating engaging marketing campaigns, ad copy, blog posts, and articles within minutes which would traditionally take hours or days. Special Features:，这一点在safew官方版本下载中也有详细论述