在你的代码开头，我们看到了这样的设定：
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）。，详情可参考谷歌浏览器【最新下载地址】
explored some other intriguing opportunities, like the very first production。Line官方版本下载对此有专业解读
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重启一遍 Termux 后，再执行以下操作：