feat(2015-01): Add day 1 solution

2026-07-13 03:03:46 +00:00 · 2022-10-12 20:56:25 +01:00
parent 688338ceeb
commit fba2ad5032
4 changed files with 120 additions and 0 deletions
@@ -0,0 +1,82 @@
+using System.Reflection;
+
+namespace AOC.Tests.Y2015
+{
+    [TestFixture, Parallelizable(ParallelScope.All)]
+    public class Day01
+    {
+        protected string GetThisClassName() { return this.GetType().Name; }
+        private string realData;
+
+        [SetUp]
+        public void Setup()
+        {
+            realData = File.ReadAllLines(Path.Combine(TestContext.CurrentContext.TestDirectory, "Y2015", "Data", $"{GetThisClassName()}.dat"))[0];
+        }
+
+        [TestCase("(())", 0)] // Example data
+        [TestCase("()()", 0)] // Example data
+        [TestCase("(((", 3)] // Example data
+        [TestCase("(()(()(", 3)] // Example data
+        [TestCase("))(((((", 3)] // Example data
+        [TestCase("())", -1)] // Example data
+        [TestCase("))(", -1)] // Example data
+        [TestCase(")))", -3)] // Example data
+        [TestCase(")())())", -3)] // Example data
+        [TestCase(null, 232)] // The actual answer
+        public void Part1(string input, int? expected)
+        {
+            var lines = input != null ? input : realData;
+
+            int floorsUp = lines.Count(x => x == '(');
+            int floorsDown = lines.Count(x => x == ')');
+
+            var result = floorsUp - floorsDown;
+
+
+            if (expected != null)
+            {
+                Assert.That(result, Is.EqualTo(expected.Value));
+            }
+
+            Console.WriteLine($"Part 1: {result}");
+        }
+
+        [TestCase(")", 1)] // Example data
+        [TestCase("()())", 5)]
+        [TestCase(null, 1783)] // The actual answer
+        public void Part2(string input, int? expected)
+        {
+            var lines = input != null ? input : realData;
+
+            var currentFloor = 0;
+            int? result = null;
+
+            foreach (var (instruction, index) in lines.WithIndex())
+            {
+                if (instruction is '(')
+                {
+                    currentFloor += 1;
+                }
+                else if (instruction is ')')
+                {
+                    currentFloor -= 1;
+                }
+
+                if (currentFloor is -1)
+                {
+                    // Zero-indexed, so need to increment
+                    result = index + 1;
+                    break;
+                }
+            }
+
+            if (expected != null)
+            {
+                Assert.That(result, Is.EqualTo(expected.Value));
+            }
+
+            Console.WriteLine($"Part 2: {result}");
+        }
+    }
+}