/// <summary>
/// How many passwords are valid based on a given rule.
/// Rule is in format 1-3 a: pass where 1 is the minimum number of ocurrences of a, 3 is maximum number of occurences of a, a is a varible and pass is a string
/// </summary>
/// <param name="filename"></param>
/// <returns></returns>
public static int FirstPart(string filename)
{
var reader = ReadInputs.OpenInputFile(filename);
string line;
int numOfValidPasswords = 0;
int row = 0;
while ((line = reader.ReadLine()) != null)
{
var passwordRule = new PasswordRule(line);
// Uncomment for first part
//var isValidOld = passwordRule.IsValidOldPolicy();
//if (isValidOld)
//{
// numOfValidPasswords++;
//}
// Uncomment for 2nd part
var isValidNew = passwordRule.IsValidNewPolicy();
if (isValidNew)
{
numOfValidPasswords++;
}
Console.WriteLine(String.Format("Row {0}, Rule: {1}, IsValid: {2}", row, passwordRule.ToString(), isValidNew));
}
reader.Close();
return(numOfValidPasswords);
}