day 6

bsssshhhhhhh · Dec 6, 2021 · c1708a1 · c1708a1
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diff --git a/day 06/part1/Program.cs b/day 06/part1/Program.cs
@@ -0,0 +1,44 @@
+using AdventCommon;
+var lines = ConsoleHelpers.ReadInput();
+var lanternfish = lines[0]
+    .Split(",")
+    .Select(int.Parse)
+    .Aggregate(new Dictionary<int, long>() {
+        {0, 0}, {1, 0}, {2, 0}, {3, 0}, {4, 0}, {5, 0}, {6, 0}, {7, 0}, {8, 0} 
+    } , (acc, cur) => {
+       if (!acc.TryGetValue(cur, out _))
+       {
+           acc[cur] = 1;
+       }
+       else
+       {
+           acc[cur]++;
+       }
+
+       return acc;
+    });
+
+var simulateDay = () => {
+    foreach (var kvp in lanternfish.ToDictionary(k => k.Key, v => v.Value))
+    {
+        if (kvp.Key == 0)
+        {
+            lanternfish[kvp.Key] = 0;
+            lanternfish[6] += kvp.Value;
+            lanternfish[8] += kvp.Value;
+        }
+        else
+        {
+            lanternfish[kvp.Key] -= kvp.Value;
+            lanternfish[kvp.Key - 1] += kvp.Value;
+        }
+    }
+};
+
+
+for (var i = 0; i < 80; i++)
+{
+    simulateDay();
+}
+
+Console.WriteLine(lanternfish.Values.Sum());
diff --git a/day 06/part1/input.txt b/day 06/part1/input.txt
@@ -0,0 +1 @@
+1,1,3,5,1,3,2,1,5,3,1,4,4,4,1,1,1,3,1,4,3,1,2,2,2,4,1,1,5,5,4,3,1,1,1,1,1,1,3,4,1,2,2,5,1,3,5,1,3,2,5,2,2,4,1,1,1,4,3,3,3,1,1,1,1,3,1,3,3,4,4,1,1,5,4,2,2,5,4,5,2,5,1,4,2,1,5,5,5,4,3,1,1,4,1,1,3,1,3,4,1,1,2,4,2,1,1,2,3,1,1,1,4,1,3,5,5,5,5,1,2,2,1,3,1,2,5,1,4,4,5,5,4,1,1,3,3,1,5,1,1,4,1,3,3,2,4,2,4,1,5,5,1,2,5,1,5,4,3,1,1,1,5,4,1,1,4,1,2,3,1,3,5,1,1,1,2,4,5,5,5,4,1,4,1,4,1,1,1,1,1,5,2,1,1,1,1,2,3,1,4,5,5,2,4,1,5,1,3,1,4,1,1,1,4,2,3,2,3,1,5,2,1,1,4,2,1,1,5,1,4,1,1,5,5,4,3,5,1,4,3,4,4,5,1,1,1,2,1,1,2,1,1,3,2,4,5,3,5,1,2,2,2,5,1,2,5,3,5,1,1,4,5,2,1,4,1,5,2,1,1,2,5,4,1,3,5,3,1,1,3,1,4,4,2,2,4,3,1,1
diff --git a/day 06/part1/part1.csproj b/day 06/part1/part1.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\common\common.csproj" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>
diff --git a/day 06/part2/Program.cs b/day 06/part2/Program.cs
@@ -0,0 +1,44 @@
+using AdventCommon;
+var lines = ConsoleHelpers.ReadInput();
+var lanternfish = lines[0]
+    .Split(",")
+    .Select(int.Parse)
+    .Aggregate(new Dictionary<int, long>() {
+        {0, 0}, {1, 0}, {2, 0}, {3, 0}, {4, 0}, {5, 0}, {6, 0}, {7, 0}, {8, 0} 
+    } , (acc, cur) => {
+       if (!acc.TryGetValue(cur, out _))
+       {
+           acc[cur] = 1;
+       }
+       else
+       {
+           acc[cur]++;
+       }
+
+       return acc;
+    });
+
+var simulateDay = () => {
+    foreach (var kvp in lanternfish.ToDictionary(k => k.Key, v => v.Value))
+    {
+        if (kvp.Key == 0)
+        {
+            lanternfish[kvp.Key] = 0;
+            lanternfish[6] += kvp.Value;
+            lanternfish[8] += kvp.Value;
+        }
+        else
+        {
+            lanternfish[kvp.Key] -= kvp.Value;
+            lanternfish[kvp.Key - 1] += kvp.Value;
+        }
+    }
+};
+
+
+for (var i = 0; i < 256; i++)
+{
+    simulateDay();
+}
+
+Console.WriteLine(lanternfish.Values.Sum());
diff --git a/day 06/part2/input.txt b/day 06/part2/input.txt
@@ -0,0 +1 @@
+1,1,3,5,1,3,2,1,5,3,1,4,4,4,1,1,1,3,1,4,3,1,2,2,2,4,1,1,5,5,4,3,1,1,1,1,1,1,3,4,1,2,2,5,1,3,5,1,3,2,5,2,2,4,1,1,1,4,3,3,3,1,1,1,1,3,1,3,3,4,4,1,1,5,4,2,2,5,4,5,2,5,1,4,2,1,5,5,5,4,3,1,1,4,1,1,3,1,3,4,1,1,2,4,2,1,1,2,3,1,1,1,4,1,3,5,5,5,5,1,2,2,1,3,1,2,5,1,4,4,5,5,4,1,1,3,3,1,5,1,1,4,1,3,3,2,4,2,4,1,5,5,1,2,5,1,5,4,3,1,1,1,5,4,1,1,4,1,2,3,1,3,5,1,1,1,2,4,5,5,5,4,1,4,1,4,1,1,1,1,1,5,2,1,1,1,1,2,3,1,4,5,5,2,4,1,5,1,3,1,4,1,1,1,4,2,3,2,3,1,5,2,1,1,4,2,1,1,5,1,4,1,1,5,5,4,3,5,1,4,3,4,4,5,1,1,1,2,1,1,2,1,1,3,2,4,5,3,5,1,2,2,2,5,1,2,5,3,5,1,1,4,5,2,1,4,1,5,2,1,1,2,5,4,1,3,5,3,1,1,3,1,4,4,2,2,4,3,1,1
diff --git a/day 06/part2/part2.csproj b/day 06/part2/part2.csproj
@@ -0,0 +1,14 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <ItemGroup>
+    <ProjectReference Include="..\..\common\common.csproj" />
+  </ItemGroup>
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>