密码验证的正则表达式[关闭]

Question

I have been handed a task of putting together a login screen. I found something workable online but I'm having a problem writing the regular expression to validate the password. The following policy should be enforced -- the password should be exactly 14 characters long and should include:

• At least 2 upper case letters,
• at least 2 lower case letters,
• at least 2 numbers, and
• at least 2 'special' characters

I have no idea how to write this. Can anybody help?

Answer 1

Assuming by "special characters" you mean anything that isn't a letter or number:

^(?=.*[a-z].*[a-z])(?=.*[A-Z].*[A-Z])(?=.*[0-9].*[0-9])(?=.*[^A-Za-z0-9].*[^A-Za-z0-9]).{14}$