public static async Task Run()
{
string[] lines = await Loading.Load(nameof(Day4));
int validCount = 0;
for (int l = 0; l < lines.Length; l++)
{
var keys = new HashSet <string>();
bool valid = true;
while (l < lines.Length && !string.IsNullOrWhiteSpace(lines[l]))
{
foreach (var pair in lines[l].Split())
{
var parts = pair.Split(':');
if (parts.Length != 2)
{
Console.WriteLine($"Passport key:value pair with an unexpected number of ':' characters: {pair}");
valid = false;
}
else if (!ValidKeys.Contains(parts[0]))
{
Console.WriteLine($"Invalid key: {parts[0]}");
valid = false;
}
else if (!keys.Add(parts[0]))
{
Console.WriteLine($"Duplicate key: {parts[0]}");
valid = false;
}
}
l++;
}
if (valid)
{
var missing = RequiredKeys.Where(k => !keys.Contains(k)).ToList();
if (missing.Count != 0)
{
Console.WriteLine($"Missing keys: {missing.JoinWithLast(", ", ", and ")}");
}
else
{
validCount++;
}
}
}
Console.WriteLine($"Valid passports: {validCount}");
}
public static async Task Run()
{
string[] lines = await Loading.Load(nameof(Day4));
int validCount = 0;
for (int l = 0; l < lines.Length; l++)
{
var keys = new HashSet <string>();
bool valid = true;
while (l < lines.Length && !string.IsNullOrWhiteSpace(lines[l]))
{
foreach (var pair in lines[l].Split())
{
var parts = pair.Split(':');
if (parts.Length != 2)
{
Console.WriteLine($"Passport key:value pair with an unexpected number of ':' characters: {pair}");
valid = false;
}
else if (!keys.Add(parts[0]))
{
Console.WriteLine($"Duplicate key: {parts[0]}");
valid = false;
}
else
{
switch (parts[0])
{
case BirthYear:
valid = ValidateYear(parts[1], "birth", 1920, 2002) && valid;
break;
case IssueYear:
valid = ValidateYear(parts[1], "issue", 2010, 2020) && valid;
break;
case ExpYear:
valid = ValidateYear(parts[1], "expiration", 2020, 2030) && valid;
break;
case Height:
valid = ValidateHeight(parts[1]) && valid;
break;
case HairColour:
valid = ValidateHairColour(parts[1]) && valid;
break;
case EyeColour:
if (parts[1] is not("amb" or "blu" or "brn" or "grn" or "gry" or "hzl" or "oth"))
{
valid = false;
Console.WriteLine($"Invalid eye colour: {parts[1]}");
}
break;
case PassID:
valid = ValidatePassID(parts[1]) && valid;
break;
case CountryID:
// Ignore
break;
default:
Console.WriteLine($"Invalid key: {parts[0]}");
valid = false;
break;
}
}
}
l++;
}
var missing = RequiredKeys.Where(k => !keys.Contains(k)).ToList();
if (missing.Count != 0)
{
Console.WriteLine($"Missing keys: {missing.JoinWithLast(", ", ", and ")}");
}
else if (valid)
{
validCount++;
}
}
Console.WriteLine($"Valid passports: {validCount}");
}
