public static bool IsValid(Dictionary <string, string> passport)
{
return(passport.ContainsKey("byr") &&
passport.ContainsKey("iyr") &&
passport.ContainsKey("eyr") &&
passport.ContainsKey("hgt") &&
passport.ContainsKey("hcl") &&
passport.ContainsKey("ecl") &&
passport.ContainsKey("pid") &&
passport.All(kv => PassportValidators.FieldIsValid(kv)));
}
private static bool FieldIsValid(KeyValuePair <string, string> field)
{
return(field.Key switch
{
"byr" => int.TryParse(field.Value, out var birthYear) && birthYear >= 1920 && birthYear <= 2002,
"iyr" => int.TryParse(field.Value, out var issueYear) && issueYear >= 2010 && issueYear <= 2020,
"eyr" => int.TryParse(field.Value, out var expireYear) && expireYear >= 2020 && expireYear <= 2030,
"hgt" => PassportValidators.HeightIsValid(field),
"hcl" => Regex.IsMatch(field.Value, @"^#[0-9|a-f]{6}$"),
"ecl" => Regex.IsMatch(field.Value, @"^(amb|blu|brn|gry|grn|hzl|oth)$"),
"pid" => Regex.IsMatch(field.Value, @"^[0-9]{9}$"),
"cid" => true,
_ => false
});
public async Task <string> SolveAsync()
{
var passports = new List <Dictionary <string, string> >();
var builder = new StringBuilder();
var regex = new Regex(@"(\w*):(\S*)\b+", RegexOptions.Compiled);
using (var reader = new StreamReader(this._inputFile))
{
string line = null;
var tempInnerList = new List <KeyValuePair <string, string> >();
while ((line = await reader.ReadLineAsync().ConfigureAwait(false)) != null)
{
if (string.IsNullOrWhiteSpace(line))
{
passports.Add(tempInnerList.ToDictionary(k => k.Key, v => v.Value));
tempInnerList = new List <KeyValuePair <string, string> >();
continue;
}
tempInnerList.AddRange(
regex.Matches(line)
.Select(m =>
new KeyValuePair <string, string>(
m.Groups[1].ToString(),
m.Groups[2].ToString())));
}
if (tempInnerList.Any())
{
passports.Add(tempInnerList.ToDictionary(k => k.Key, v => v.Value));
}
}
var numberOfValidPassports = passports.Count(p => PassportValidators.IsValid(p));
builder.Append($"Answer: {numberOfValidPassports}");
return(builder.ToString());
}
