diff --git a/Advent24/Day1.cs b/Advent24/Day1.cs
new file mode 100644
index 0000000..38219cb
--- /dev/null
+++ b/Advent24/Day1.cs
@@ -0,0 +1,76 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Advent24
+{
+    internal class Day1
+    {
+        public Day1()
+        {
+            string fileData = System.IO.File.ReadAllText(@"..\..\..\inputd1.txt");
+            var pairsArray = fileData.Split('\n');
+
+            var list1 = new SortedList<Int32, Int32>(pairsArray.Length);
+            var list2 = new SortedList<Int32, Int32>(pairsArray.Length);
+            foreach (var pair in pairsArray)
+            {
+                if (System.String.IsNullOrEmpty(pair)) continue;
+                // pairArray has 4 elements, and the middle two are blanks
+                // because there are 3 spaces between the two numbers
+                var pairArray = pair.Split(' ');
+                Int32 myInteger = System.Convert.ToInt32(pairArray[0]);
+                if (list1.TryGetValue(myInteger, out int value1)) list1[myInteger] = ++value1;
+                else list1.Add(myInteger, 1);
+                Console.WriteLine("{0:d} {1:d}", myInteger, list1[myInteger]);
+
+                myInteger = System.Convert.ToInt32(pairArray[3]);
+                if (list2.TryGetValue(myInteger, out int value2)) list2[myInteger] = ++value2;
+                else list2.Add(myInteger, 1);
+                Console.WriteLine("{0:d} {1:d}", myInteger, list2[myInteger]);
+            }
+
+            Int32 sumOfDifferences = 0;
+            Int32 i = 0, j = 0;
+
+            var list1Copy = new SortedList<Int32, Int32>(list1);
+            var list2Copy = new SortedList<Int32, Int32>(list2);
+
+            while (i < list1.Count && j < list2.Count)
+            {
+                Int32 value1 = list1.GetKeyAtIndex(i);
+                Int32 value2 = list2.GetKeyAtIndex(j);
+
+                if (value1 > value2) sumOfDifferences += (value1 - value2);
+                else sumOfDifferences += (value2 - value1);
+
+                list1[value1]--; list2[value2]--;
+
+                if (list1[value1] == 0) i++;
+                if (list2[value2] == 0) j++;
+            }
+
+            Console.WriteLine("{0:s} {1:d}", "Sum of differences = ", sumOfDifferences);
+
+            i = 0; Int32 similarityScore = 0;
+            while (i < list1Copy.Count)
+            {
+                Int32 value1 = list1Copy.GetKeyAtIndex(i);
+                list2Copy.TryGetValue(value1, out Int32 numberOfAppearancesInList2);
+
+                // default value of Int32 numberOfAppearancesInList2 is 0
+                similarityScore += value1 * numberOfAppearancesInList2;
+
+                list1Copy[value1]--;
+
+                if (list1Copy[value1] == 0) i++;
+            }
+
+            Console.WriteLine("{0:s} {1:d}", "Similarity score = ", similarityScore);
+
+            Console.ReadLine();
+        }
+    }
+}
diff --git a/Advent24/Program.cs b/Advent24/Program.cs
index 7dbb1ee..affe24f 100644
--- a/Advent24/Program.cs
+++ b/Advent24/Program.cs
@@ -7,67 +7,7 @@ namespace Advent24
     {
         static void Main(string[] args)
         {
-            string fileData = System.IO.File.ReadAllText(@"..\..\..\inputd1.txt");
-            var pairsArray = fileData.Split('\n');
-
-            var list1 = new SortedList<Int32, Int32>(pairsArray.Length);
-            var list2 = new SortedList<Int32, Int32>(pairsArray.Length);
-            foreach(var pair in pairsArray)
-            {
-                if (System.String.IsNullOrEmpty(pair)) continue;
-                // pairArray has 4 elements, and the middle two are blanks
-                // because there are 3 spaces between the two numbers
-                var pairArray = pair.Split(' ');
-                Int32 myInteger = System.Convert.ToInt32(pairArray[0]);
-                if (list1.TryGetValue(myInteger, out int value1)) list1[myInteger] = ++value1;
-                else list1.Add(myInteger, 1);
-                Console.WriteLine("{0:d} {1:d}", myInteger, list1[myInteger]);
-
-                myInteger = System.Convert.ToInt32(pairArray[3]);
-                if (list2.TryGetValue(myInteger, out int value2)) list2[myInteger] = ++value2;
-                else list2.Add(myInteger, 1);
-                Console.WriteLine("{0:d} {1:d}", myInteger, list2[myInteger]);
-            }
-
-            Int32 sumOfDifferences = 0;
-            Int32 i = 0, j = 0;
-            
-            var list1Copy = new SortedList<Int32, Int32>(list1);
-            var list2Copy = new SortedList<Int32, Int32>(list2);
-
-            while (i < list1.Count && j < list2.Count)
-            {
-                Int32 value1 = list1.GetKeyAtIndex(i);
-                Int32 value2 = list2.GetKeyAtIndex(j);
-
-                if (value1 > value2) sumOfDifferences += (value1 - value2);
-                else sumOfDifferences += (value2 - value1);
-
-                list1[value1]--; list2[value2]--;
-
-                if (list1[value1] == 0) i++;
-                if (list2[value2] == 0) j++;
-            }
-
-            Console.WriteLine("{0:s} {1:d}", "Sum of differences = ", sumOfDifferences);
-
-            i = 0; Int32 similarityScore = 0;
-            while (i < list1Copy.Count)
-            {
-                Int32 value1 = list1Copy.GetKeyAtIndex(i);
-                list2Copy.TryGetValue(value1, out Int32 numberOfAppearancesInList2);
-
-                // default value of Int32 numberOfAppearancesInList2 is 0
-                similarityScore += value1 * numberOfAppearancesInList2;
-
-                list1Copy[value1]--;
-
-                if (list1Copy[value1] == 0) i++;
-            }
-
-            Console.WriteLine("{0:s} {1:d}", "Similarity score = ", similarityScore);
-
-            Console.ReadLine();
+            _ = new Day1();
         }
     }
 }