public static GuardEvent FromString(string strEvent)
{
GuardEvent guardEvent = new GuardEvent();
string[] parts = strEvent.Split(new string[] { "[", "-", " ", ":", "]", "#", }, StringSplitOptions.RemoveEmptyEntries);
guardEvent.Date = new DateTime(
Convert.ToInt32(parts[0]),
Convert.ToInt32(parts[1]),
Convert.ToInt32(parts[2]),
Convert.ToInt32(parts[3]),
Convert.ToInt32(parts[4]),
0
);
if (parts[5] == "Guard")
{
guardEvent.ID = Convert.ToInt32(parts[6]);
guardEvent.Type = GuardEventType.ShiftBegin;
}
if (parts[5] == "falls")
{
guardEvent.Type = GuardEventType.FallSleep;
}
if (parts[5] == "wakes")
{
guardEvent.Type = GuardEventType.WakeUp;
}
return(guardEvent);
}
public string ResolvePart2(string[] inputs)
{
List <GuardEvent> guardEvents = GuardEvent.FromStringArray(inputs);
Dictionary <int, GuardSleepHistogram> dictFullHistogram = BuildFullHistorgram(guardEvents);
int selectedGuardID = int.MinValue;
int selectedMinute = int.MinValue;
int maxSleepMinuteValue = int.MinValue;
for (int i = 0; i < GuardSleepHistogram.MinutesOnHour; i++)
{
foreach (GuardSleepHistogram guardHistogram in dictFullHistogram.Values)
{
if (guardHistogram.SleepOnMunute[i] > maxSleepMinuteValue)
{
maxSleepMinuteValue = guardHistogram.SleepOnMunute[i];
selectedGuardID = guardHistogram.ID;
selectedMinute = i;
}
}
}
int result = selectedGuardID * selectedMinute;
return(result.ToString());
}
public string ResolvePart1(string[] inputs)
{
List <GuardEvent> guardEvents = GuardEvent.FromStringArray(inputs);
Dictionary <int, GuardSleepHistogram> dictFullHistogram = BuildFullHistorgram(guardEvents);
// Find sleepier guard
GuardSleepHistogram highestSleeperHistogram = null;
long highestTotalSleep = long.MinValue;
foreach (GuardSleepHistogram guardHistogram in dictFullHistogram.Values)
{
int totalSleep = guardHistogram.SleepOnMunute.Sum();
if (totalSleep > highestTotalSleep)
{
highestSleeperHistogram = guardHistogram;
highestTotalSleep = totalSleep;
}
}
// Find sleepier minute
int maxSleepMinute = int.MinValue;
int maxSleepMinuteValue = int.MinValue;
for (int i = 0; i < GuardSleepHistogram.MinutesOnHour; i++)
{
if (highestSleeperHistogram.SleepOnMunute[i] > maxSleepMinuteValue)
{
maxSleepMinute = i;
maxSleepMinuteValue = highestSleeperHistogram.SleepOnMunute[i];
}
}
int result = highestSleeperHistogram.ID * maxSleepMinute;
return(result.ToString());
}
