Separate day 1 logic

Handlers/Day01.cs

@@ -0,0 +1,39 @@
+namespace AdventOfCode2022.Handlers
+{
+    public class Day01
+    {
+        string[] elves;
+        IEnumerable<int> caloriesPerElf;
+
+        public Day01()
+        {
+            var lines = System.IO.File.ReadAllText(@"./days/01/input");
+            elves = lines.Split("\n\n");
+            caloriesPerElf = elves.Select(ParseCalories);
+
+            PartA();
+            PartB();
+        }
+
+        private int ParseCalories(string elf)
+        {
+            return elf.Split("\n")
+                .Where(calorie => !string.IsNullOrWhiteSpace(calorie))
+                .Select(int.Parse)
+                .Sum();
+        }
+
+
+        public void PartA()
+        {
+            var max = caloriesPerElf.Max();
+            Console.WriteLine($"Highest calories: {max}");
+        }
+
+        public void PartB()
+        {
+            var topThree = caloriesPerElf.OrderByDescending(calories => calories).Take(3).Sum();
+            Console.WriteLine($"Top three calories: {topThree}");
+        }
+    }
+}

Program.cs

@@ -1,4 +1,5 @@
-namespace AdventOfCode2022
+using AdventOfCode2022.Handlers;
+namespace AdventOfCode2022
 {
     internal class Program
     {
@@ -18,35 +19,7 @@
         }
 
         static void dayOne() {
-            Console.WriteLine("Day 1");
+            new Day01();
-            // Assumes you're running the binary from the project root
-            var lines = System.IO.File.ReadAllText(@"./days/01/input");
-            var split = lines.Split("\n\n");
-
-            List<int> allCalories = new List<int>();
-
-            foreach (var elf in split) {
-                var rawCalories = elf.Split("\n");
-
-                int calories = 0;
-                foreach (var food in rawCalories) {
-                    if (string.IsNullOrWhiteSpace(food)) {
-                        continue;
-                    }
-
-                    calories += int.Parse(food.Trim());
-                }
-
-                allCalories.Add(calories);
-            }
-
-            allCalories.Sort();
-            allCalories.Reverse();
-
-            var topThree = allCalories.Take(3).Sum();
-
-            Console.WriteLine($"Highest calories: {allCalories.First()}");
-            Console.WriteLine($"Top three calories: {topThree}");
             PrintSeparator();
         }
     }