feat(2015-02): Add day 2 solution

2026-07-13 03:03:46 +00:00 · 2022-10-12 23:13:32 +01:00
parent fba2ad5032
commit 75671d13e1
3 changed files with 1110 additions and 0 deletions
@@ -0,0 +1,89 @@
+using System;
+using System.Reflection;
+
+namespace AOC.Tests.Y2015
+{
+    [TestFixture, Parallelizable(ParallelScope.All)]
+    public class Day02
+    {
+        protected string GetThisClassName() { return this.GetType().Name; }
+        private string[] realData;
+
+        [SetUp]
+        public void Setup()
+        {
+            realData = File.ReadAllLines(Path.Combine(TestContext.CurrentContext.TestDirectory, "Y2015", "Data", $"{GetThisClassName()}.dat"));
+        }
+
+        [TestCase("2x3x4", 58)]
+        [TestCase("1x1x10", 43)]
+        [TestCase(null, 1606483)] // The actual answer
+        public void Part1(string input, int? expected)
+        {
+            string[] lines = input != null ? new[] { input } : realData;
+
+            int totalWrappingPaper = 0;
+
+            foreach (var present in lines)
+            {
+                string[] dimensions = present.Split('x');
+                int length = Int32.Parse(dimensions[0]);
+                int width = Int32.Parse(dimensions[1]);
+                int height = Int32.Parse(dimensions[2]);
+
+                int sideAArea = length * width;
+                int sideBArea = width * height;
+                int sideCArea = height * length;
+
+                int smallestSideArea = new List<int>() { sideAArea, sideBArea, sideCArea }.Min();
+
+                int totalPaperForPresent = (2 * sideAArea) + (2 * sideBArea) + (2 * sideCArea) + smallestSideArea;
+
+                totalWrappingPaper += totalPaperForPresent;
+            }
+
+            if (expected != null)
+            {
+                Assert.That(totalWrappingPaper, Is.EqualTo(expected.Value));
+            }
+
+            Console.WriteLine($"Part 1: {totalWrappingPaper}");
+        }
+
+        [TestCase("2x3x4", 34)]
+        [TestCase("1x1x10", 14)]
+        [TestCase(null, 3842356)] // The actual answer
+        public void Part2(string input, int? expected)
+        {
+            string[] lines = input != null ? new[] { input } : realData;
+
+            var totalRibbon = 0;
+
+            foreach (var present in lines)
+            {
+                string[] dimensions = present.Split('x');
+                int[] dimensionsInts = Array.ConvertAll(dimensions, s => int.Parse(s));
+
+                int length = dimensionsInts[0];
+                int width = dimensionsInts[1];
+                int height = dimensionsInts[2];
+
+                Array.Sort(dimensionsInts);
+
+                var smallestPerimeter = (2 * dimensionsInts[0]) + (2 * dimensionsInts[1]);
+                var cubicFeetVolume = length * width * height;
+
+                var totalRibbonForPresent = smallestPerimeter + cubicFeetVolume;
+
+                totalRibbon += totalRibbonForPresent;
+            }
+
+            if (expected != null)
+            {
+                Assert.That(totalRibbon, Is.EqualTo(expected.Value));
+            }
+
+            Console.WriteLine($"Part 2: {totalRibbon}");
+        }
+    }
+}