天行健，君子以自强不息；地势坤，君子以厚德载物 ... using ::isalnum; //是否字母或数字 using ::isalpha; //是否字母 using ::iscntrl; //是否控制符 ...
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是否字母、数字或标点 using isgraph
可以把密码设定为更容易记忆的或更安全的，还可以指定密码是否包含数字、符号、元音和大写字母。
You can tailor the passwords to be memorable or secure, and you can specify whether to include Numbers, symbols, vowels, and capital letters.
这些规则指定密码可以包含哪些内容，例如，密码是否应当只包含字母或字母数字字符。
These rules specify what a password can consist of, such as whether a password should consist of only alphabets or alphanumeric characters. The following rules are supported.
一般以原来申请入学时的护照号码或”888888”为密码，请注意原有护照上的字母是否有大小写及与数字之间的空格。
The original password is your passport number when applying for study or "888888", please be careful if there are capital letters (alphabets) on your passport or space between numbers and letters.
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