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网友收藏1658. 合法标识符-CSDN博客
文章浏览阅读7.6k次，点赞2次，收藏4次。1658. 合法标识符请判断字符串 str 是不是一个合法的标识符。合法的标识符由字母（A-Z，a-z）、数字（0-9）和下划线组成，并且首字符不能为数字。样例样例 1：输入：str= "LintCode"......
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