public static int CalcPasswordStrength(PasswordParts parts)
{
int strength = 0;
strength = 4 * parts.passwordLength;
strength += 4 * parts.numsCount;
if (parts.upperLettersCount != 0)
{
strength += (parts.passwordLength - parts.upperLettersCount) * 2;
}
if (parts.lowerLettersCount != 0)
{
strength += (parts.passwordLength - parts.lowerLettersCount) * 2;
}
if (parts.numsCount == 0)
{
strength -= parts.passwordLength;
}
if (parts.lettersCount == 0)
{
strength -= parts.passwordLength;
}
if (parts.duplicatesCount != 0)
{
strength -= parts.duplicatesCount;
}
return(strength);
}
static void Main(string[] args)
{
if (args.Length != 1)
{
Console.WriteLine("Invalid argument count.\nUsage PasswordStrength.exe <password>.");
}
else
{
PasswordParts parts = CalcPasswordParts(args[0]);
int passwordStrength = CalcPasswordStrength(parts);
Console.WriteLine(passwordStrength);
}
}
public static PasswordParts CalcPasswordParts(string password)
{
PasswordParts parts = new PasswordParts();
parts.passwordLength = password.Length;
Dictionary <char, int> symbols = new Dictionary <char, int>();
for (int i = 0; i < password.Length; ++i)
{
if (symbols.ContainsKey(password[i]))
{
symbols[password[i]] += 1;
}
else
{
symbols.Add(password[i], 1);
}
if (password[i] >= 'A' && password[i] <= 'Z')
{
++parts.lettersCount;
++parts.upperLettersCount;
}
else if (password[i] >= 'a' && password[i] <= 'z')
{
++parts.lettersCount;
++parts.lowerLettersCount;
}
else if (password[i] >= '0' && password[i] <= '9')
{
++parts.numsCount;
}
else
{
Console.WriteLine("Invalid symbols in password.");
Environment.Exit(1);
}
}
foreach (var i in symbols)
{
if (i.Value > 1)
{
parts.duplicatesCount += i.Value;
}
}
return(parts);
}
