using System;

​

using System.Text;

using System.Text.RegularExpressions;

public class Program {

    public static void Main() {

        String password = "Password123";

        PasswordScore passwordStrengthScore = PasswordAdvisor.CheckStrength(password);

        switch (passwordStrengthScore) {

            case PasswordScore.Blank:

            case PasswordScore.VeryWeak:

            case PasswordScore.Weak:

                    Console.WriteLine("Weak:"+PasswordScore.Weak);

                    break;

            case PasswordScore.Medium:

            case PasswordScore.Strong:

            case PasswordScore.VeryStrong:

                   Console.WriteLine("Strong:"+(int)passwordStrengthScore);

                   break;

        }

        Console.WriteLine("Weak:"+passwordStrengthScore);

    }

}

​

​

​

  public enum PasswordScore {

    Blank = 0,

    VeryWeak = 1,

    Weak = 2,

    Medium = 3,

    Strong = 4,

    VeryStrong = 5

  }

​

  public class PasswordAdvisor {

    public static PasswordScore CheckStrength(string password) {

      int score = 0;

​

      if (password.Length < 1)

        return PasswordScore.Blank;

      if (password.Length < 4)

        return PasswordScore.VeryWeak;

      if (password.Length >= 8)

        score++;

      if (password.Length >= 12)

        score++;

      if (Regex.IsMatch(password, @"\d+"))

        score++;

      if (Regex.IsMatch(password, @"[a-z]") && Regex.IsMatch(password, @"[A-Z]"))

          score++;

      if (Regex.IsMatch(password, @".[!,@,#,$,%,^,&,*,?,_,~,-,£,(,)]"))

        score++;

      return (PasswordScore)score;

    }

​

  }