public void OrderTicketFields()
{
var validClasses = new List <KeyValuePair <string, int> >();
var headerRows = new Dictionary <string, int>();
var valueCount = ValidTickets.Max(v => v.Values.Count);
for (var i = 0; i < valueCount; ++i)
{
var columnValues = ValidTickets.Select(t => t.Values[i]);
validClasses.AddRange(FieldBounds.Where(fb => fb.IsRuleValidForValues(columnValues))
.Select(fb => new KeyValuePair <string, int>(fb.ClassName, i)));
}
while (validClasses.Count > 0)
{
validClasses.GroupBy(kvp => kvp.Key)
.Where(g => g.Count() == 1)
.SelectMany(g => g.Select(k => k))
.ToList().ForEach(kvp => headerRows.AddKvp(kvp));
validClasses.RemoveAll(kvp => headerRows.ContainsValue(kvp.Value));
}
var result = headerRows.Where(kv => kv.Key.StartsWith("departure"))
.Select(kv => MyTicket.Values[kv.Value])
.Aggregate(1L, (f, s) => f * s);
}
public void FindFieldIndexes()
{
Dictionary <string, HashSet <int> > possibleIndexes = new Dictionary <string, HashSet <int> >();
foreach (var rule in Rules)
{
var fieldName = rule.Name;
possibleIndexes[fieldName] = new HashSet <int>();
for (int i = 0; i < Rules.Count; i++)
{
if (ValidTickets.All(ticket => rule.IsValidValue(ticket.Values[i])))
{
possibleIndexes[fieldName].Add(i);
}
else
{
if (fieldName == "type" || fieldName == "train")
{
var invalid = ValidTickets.First(ticket => !rule.IsValidValue(ticket.Values[i]));
Console.WriteLine($"First mismatch for {fieldName} at {i}: {invalid.Values[i]}");
}
}
}
}
bool stop = false;
while (_FieldIndexes.Count < Rules.Count && !stop)
{
foreach (var kvp in possibleIndexes)
{
foreach (var key in _FieldIndexes.Keys)
{
kvp.Value.Remove(_FieldIndexes[key]);
}
if (kvp.Value.Count == 1)
{
_FieldIndexes[kvp.Key] = kvp.Value.First();
}
else if (kvp.Value.Count == 0)
{
stop = true;
}
}
foreach (var key in _FieldIndexes.Keys)
{
possibleIndexes.Remove(key);
}
}
}
public List <int> ValidateTickets(List <string> tickets)
{
List <int> invalidFields = new List <int>();
foreach (var ticket in tickets)
{
var badFields = ValidateTicket(ticket);
if (badFields.Count > 0)
{
invalidFields.AddRange(badFields);
}
else
{
ValidTickets.Add(ticket);
}
}
return(invalidFields);
}