检查给定字符串是否只包含一种ch 具体来说,如果我有字符串a:a = "uuuuuuuuuuuuuiuuuuu"和字符串b:b = "uuuuuuuuuuuuuuuu",我想检查给定的字符串是否只包含一种字符。在第一个字符串中,它包 ...2024-04-20 已阅读: n次