private PasswordPolicy ParsePolicy(string policy)
{
var result = new PasswordPolicy();
var indexOfDash = policy.IndexOf('-');
var indexOfSpace = policy.IndexOf(' ');
result.MinimalOccurrence = int.Parse(policy.Substring(0, indexOfDash));
result.MaximumOccurrence = int.Parse(policy.Substring(indexOfDash + 1, indexOfSpace - indexOfDash - 1));
result.Character = char.Parse(policy.Substring(indexOfSpace + 1, 1));
return(result);
}
public void AddNewPolicy(string pos1, string pos2, string letter, string password)
{
int minimum = Int32.Parse(pos1);
int maximum = Int32.Parse(pos2);
var newPolicy = new PasswordPolicy {
FirstRule = minimum, SecondRule = maximum, Letter = Convert.ToChar(letter), Password = password
};
if (newPolicy.IsValidNewPolicy())
{
PasswordPolicies.Add(newPolicy);
}
}
public int ValidatePasswords(IEnumerable <PasswordCheck> passwords, PasswordPolicy policy)
{
int validPasswords;
if (policy == PasswordPolicy.OLD)
{
validPasswords = OldPolicyValidation(passwords);
}
else
{
validPasswords = NewPolicyValidation(passwords);
}
return(validPasswords);
}
public string Solve()
{
var inputs = Inputs.GetInputsValues("2");
var lines = inputs.Split(Environment.NewLine.ToCharArray(), StringSplitOptions.RemoveEmptyEntries);
var count = 0;
foreach (var line in lines)
{
if (PasswordPolicy.ValidateOne(PasswordPolicy.Parse(line)))
{
count++;
}
}
return(count.ToString());
}
static int Puzzle2(string[] input)
{
int validPasswords = 0;
foreach (var line in input)
{
var parts = line.Split(':');
PasswordPolicy policy = new PasswordPolicy(parts[0]);
if (policy.ValidatePasswordPositions(parts[1].Trim()))
{
validPasswords++;
}
}
return(validPasswords);
}
/// <summary>
/// The main method that is called outside this class that will solve the puzzle
/// and return the answer
/// </summary>
/// <returns>The answer to the puzzle</returns>
public int solvePuzzle()
{
int numTimesFoundAcceptedPassword = 0;
// load all the puzzle data from the PuzzleData.txt file
string puzzleData = LoadPuzzleDataIntoMemory();
// split the puzzleData data into rows (find '\n' which indicates new line)
string[] puzzleArray = puzzleData.Trim().Split('\n', StringSplitOptions.RemoveEmptyEntries);
// go through each line
foreach (string singlePuzzlePeace in puzzleArray)
{
PasswordPolicy passwordPolicy = new PasswordPolicy(singlePuzzlePeace);
if (passwordPolicy.isPasswordValid_PuzzleOne())
{
numTimesFoundAcceptedPassword++;
}
}
return(numTimesFoundAcceptedPassword);
}
private static List <PasswordPolicy> ParseData(IList <string> lines)
{
// 1-8 n: dpwpmhknmnlglhjtrbpx
List <PasswordPolicy> passwords = new List <PasswordPolicy>();
foreach (string line in lines)
{
PasswordPolicy newPassword = new PasswordPolicy();
string[] split;
split = line.Split('-');
newPassword.minCount = int.Parse(split[0]);
split = split[1].Split(' ');
newPassword.maxCount = int.Parse(split[0]);
newPassword.charToMatch = split[1][0];
newPassword.passwordToCheck = split[2].TrimStart();
passwords.Add(newPassword);
}
return(passwords);
}
private bool IsPasswordValid(PasswordPolicy policy, string password)
{
var occurrences = password.Split(policy.Character).Length - 1;
return(occurrences >= policy.MinimalOccurrence && occurrences <= policy.MaximumOccurrence);
}