aoc 1+2

www/statics/aoc/2018/04_solution-2.linq

@@ -0,0 +1,85 @@
+<Query Kind="Statements" />
+
+
+var guards = new List<(int id, int awake, int[] minutes)>();
+
+var data = File
+	.ReadAllLines(Path.Combine(Path.GetDirectoryName(Util.CurrentQueryPath), @"04_input.txt"))
+	.Where(p=>!string.IsNullOrWhiteSpace(p))
+	.OrderBy(p=>p);
+
+int guard=-1;
+int wakeup=0;
+int wakesum=0;
+bool awake=true;
+int[] mins = new int[60];
+foreach (var line in data)
+{
+	int m = int.Parse(line.Substring(15,2));
+	if (line.Contains("Guard"))
+	{
+		if (awake)
+		{
+			wakesum += (60 - wakeup);
+			for (int i = wakeup; i < 60; mins[i++] = 1) ;
+		}
+		
+		if (guard>=0)guards.Add((guard, wakesum, mins));
+
+		guard = int.Parse(line.Substring(26).Split(' ')[0]);
+		awake=true;
+		wakeup=0;
+		wakesum=0;
+		mins = new int[60];
+	}
+	else if (line.Contains("falls asleep"))
+	{
+		awake = false;
+		wakesum += (m-wakeup);
+		for (int i = wakeup; i < m; mins[i++]=1);
+	}
+	else if (line.Contains("wakes up"))
+	{
+		awake = true;
+		wakeup=m;
+	}
+	else throw new Exception();
+}
+
+
+guards
+	.GroupBy(g => g.id)
+	.Select(p => new
+	{
+		id = p.Key,
+		awake_total = p.Sum(q => q.awake),
+		asleep_total = p.Sum(q => 60 - q.awake),
+		mins = p.Select(q => q.minutes).Aggregate((a, b) => a.Zip(b, (u, v) => u + v).ToArray()),
+		shifts = p.Count(),
+	})
+	.Select(p => new
+	{
+		id = p.id,
+		awake_total = p.awake_total,
+		asleep_total = p.asleep_total,
+		shifts = p.shifts,
+		mins = p.mins,
+		most_wake_min = p.mins.Select((v, i) => (v, i)).OrderByDescending(q => q.v),
+		most_sleep_min = p.mins.Select((v, i) => new { v = p.shifts - v, i = i}).OrderByDescending(q => q.v)
+	})
+	.Select(p => new
+	{
+		id = p.id,
+		awake_total = p.awake_total,
+		asleep_total = p.asleep_total,
+		shifts = p.shifts,
+		mins = p.mins,
+		most_sleep_min = p.most_sleep_min,
+		most_wake_min = p.most_wake_min,
+		result = p.most_wake_min.First().i * p.id,
+		result2 = p.most_sleep_min.First().i * p.id,
+	})
+	.OrderByDescending(p => p.most_sleep_min.First().v)
+	//.First()
+	//.result
+	.Dump();