Password strength meter

Here is a algorithm of password strength meter like gmail having strength meter

working as the follow:
We have many cases to care about to know a password strength , so we will present a The cases we have are :

* If the password matches the username then BadPassword
* If the password is less than 4 characters then TooShortPassword
* Score += password length * 4
* Score -= repeated characters in the password ( 1 char repetition )
* Score -= repeated characters in the password ( 2 char repetition )
* Score -= repeated characters in the password ( 3 char repetition )
* Score -= repeated characters in the password ( 4 char repetition )
* If the password has 3 numbers then score += 5
* If the password has 2 special characters then score += 5
* If the password has upper and lower character then score += 10
* If the password has numbers and characters then score += 15
* If the password has numbers and special characters then score += 15
* If the password has special characters and characters then score += 15
* If the password is only characters then score -= 10
* If the password is only numbers then score -= 10

* If score > 100 then score = 100

Now according to score we are going to decide the password strength

* If 0 < score < 34 then BadPassword
* If 34 < score < 68 then GoodPassword
* If 68 < score < 100 then StrongPassword