public string GetSolution()
{
var validator = new PasswordValidator();
var passwords = new List <int>();
foreach (var password in validator.GetValidPasswords(165432, 707912))
{
if (password.ToString().ToCharArray().GroupBy(x => x).Any(x => x.Count() == 2))
{
Console.WriteLine($"Valid password: {password}");
passwords.Add(password);
}
}
return(passwords.Count().ToString());
}
