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）。
The Guardian’s Jenna Amatulli talks to Rolling Stone’s Nikki McCann Ramírez about Trump’s claims, the Democrats’ rebuttal, and how the speech will land with a divided nation
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"We're basically turning history into habitat, and as far as we know, no-one has attempted anything quite like this before."，详情可参考safew官方下载
Go to worldnews。关于这个话题，safew官方版本下载提供了深入分析