Java最简单的字符串4位加一个空格 String string="0123456789abcd";StringBuilder str = new StringBuilder(string.replace(" ","")); int i = str.length() / 4; int j = str.length() % 4; for (int x = (j == 0 ? i - 1 Java 2023-12-11 44 点赞 0 评论 66 浏览
