static int SecondA(string inputFile)
{
var parser = new TicketParser();
var info = parser.ParseFile(inputFile);
var allRules = info.Properties.Select(p => p.ValidationRule());
var invalidTicketsRemoved = info.NearbyTickets.RemoveAll(t => t.Values.Any(value => !allRules.Any(rule => rule(value))));
return(invalidTicketsRemoved);
}
static int First(string inputFile)
{
var parser = new TicketParser();
var info = parser.ParseFile(inputFile);
var allRules = info.Properties.Select(p => p.ValidationRule());
var allValues = info.NearbyTickets.SelectMany(t => t.Values);
var invalidValues = allValues.Where(value => !allRules.Any(rule => rule(value)));
var sumOfInvalidValues = invalidValues.Sum();
return(sumOfInvalidValues);
}
static long Second(string inputFile)
{
var parser = new TicketParser();
var info = parser.ParseFile(inputFile);
var allRules = info.Properties.Select(p => p.ValidationRule());
var invalidTicketsRemoved = info.NearbyTickets.RemoveAll(t => t.Values.Any(value => !allRules.Any(rule => rule(value))));
var ticketIndexes = info.MyTicket.Values.Select((_, i) => i).ToList();
var indexValues = ticketIndexes.Select(i => new { Index = i, Values = info.NearbyTickets.Select(t => t.Values.ElementAt(i)) });
var foundPropsWithIndexes = info.Properties.Select(
prop => new
{
Index = indexValues.Where(iv => iv.Values.All(r => prop.ValidationRule()(r))).Select(s => s.Index).ToList(),
Property = prop
}
).ToDictionary(x => x.Property, y => y.Index);
foreach (var result in foundPropsWithIndexes)
{
Console.WriteLine(result.Key.Name + " found with indexes " + string.Join(",", foundPropsWithIndexes[result.Key]));
}
//now reduce the options
while (foundPropsWithIndexes.Values.Any(list => list.Count() > 1))
{
var propertiesWithOneIndex = foundPropsWithIndexes.Where(item => foundPropsWithIndexes[item.Key].Count() == 1);
foreach (var item in propertiesWithOneIndex)
{
item.Key.TicketIndex = foundPropsWithIndexes[item.Key].Single();
foundPropsWithIndexes.Remove(item.Key);
foreach (var indexList in foundPropsWithIndexes.Values)
{
indexList.Remove(item.Key.TicketIndex.Value);
}
}
Console.WriteLine("New iteration:");
foreach (var result in foundPropsWithIndexes)
{
Console.WriteLine(result.Key.Name + " found with indexes " + string.Join(",", foundPropsWithIndexes[result.Key]));
}
}
var departureIndexes = info.Properties.Where(prop => prop.Name.StartsWith("departure")).Select(p => p.TicketIndex.Value);
var myDepartureValues = departureIndexes.Select(i => info.MyTicket.Values.ElementAt(i));
var myDepartureProduct = myDepartureValues.Aggregate(1L, (acc, el) => acc * el);
return(myDepartureProduct);
}
