public void Part2()
{
var ticketValidator = new TicketTranslator(_input);
var fieldMaps = ticketValidator.GetFieldMap();
var myTicket = ticketValidator.MyTicket;
var answer = fieldMaps
.Where(fm => fm.FieldName.StartsWith("departure"))
.Aggregate(1L, (l, fieldMap) => l * myTicket.Values[fieldMap.FieldIndex]);
TestContext.WriteLine($"Answer = {answer}");
}
public void Part2WithTestData()
{
var ticketValidator = new TicketTranslator(_testData2);
var fieldMaps = ticketValidator.GetFieldMap().ToList();
var myTicket = ticketValidator.MyTicket;
int GetTicketValue(string fieldName)
{
return(myTicket.Values[fieldMaps.Single(fm => fm.FieldName == fieldName).FieldIndex]);
}
GetTicketValue("class").ShouldBe(12);
GetTicketValue("row").ShouldBe(11);
GetTicketValue("seat").ShouldBe(13);
}