public string CheckInputToGetAnswerPart1()
{
var ruleReader = new RuleReader();
ruleReader.MakeRegexFromRules(Rules, 0);
return(Messages.Count(i => ruleReader.CheckStringAgainstRules(i)).ToString());
}
public string CheckInputToGetAnswerPart2()
{
var newRules = Rules.Select(m =>
m.Replace("8: 42", "8: 42 | 42 8").Replace("11: 42 31", "11: 42 31 | 42 11 31")).ToList();
var ruleReader = new RuleReader();
ruleReader.MakeRegexFromRules(newRules, Messages.Max(m => m.Length));
return(Messages.Count(i => ruleReader.CheckStringAgainstRules(i)).ToString());
}