Init

.vscode/settings.json

+{
+    "dotnet.defaultSolution": "hausuebung1_cs.sln"
+}
\ No newline at end of file

README

+# Hausuebung1
+
+## Descritpion
++ Hausübung 1 für GDI
++ Matrixmulitplikation mit verschachtelten Arrays
+
+## Structure
+- **hue1CS: C#-Console Code**
+- hue1PY: Python Code
+
+## Installation and Usage
+To run the code, you must have Visual Studio Code and .NET 8 installed. 
+Activate Profile: GDI C#
+
+### NuGet-Packages
++ Xunit
++ Xunit visual studio runner
++ Microsoft.Net.Test.SDK
+
+## Authors and acknowledgment
+NilsSchaefer
+
+## License
+No License, free to use for educational purpose.
+
+## Project status
+Finished
+
+    
+

hausuebung1_cs.sln

+
+Microsoft Visual Studio Solution File, Format Version 12.00
+# Visual Studio Version 17
+VisualStudioVersion = 17.0.31903.59
+MinimumVisualStudioVersion = 10.0.40219.1
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "hausuebung1_cs", "hausuebung1_cs\hausuebung1_cs.csproj", "{6B220FAA-EE48-4C1E-9A3C-D8B63AD4CA1D}"
+EndProject
+Global
+	GlobalSection(SolutionConfigurationPlatforms) = preSolution
+		Debug|Any CPU = Debug|Any CPU
+		Release|Any CPU = Release|Any CPU
+	EndGlobalSection
+	GlobalSection(SolutionProperties) = preSolution
+		HideSolutionNode = FALSE
+	EndGlobalSection
+	GlobalSection(ProjectConfigurationPlatforms) = postSolution
+		{6B220FAA-EE48-4C1E-9A3C-D8B63AD4CA1D}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{6B220FAA-EE48-4C1E-9A3C-D8B63AD4CA1D}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{6B220FAA-EE48-4C1E-9A3C-D8B63AD4CA1D}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{6B220FAA-EE48-4C1E-9A3C-D8B63AD4CA1D}.Release|Any CPU.Build.0 = Release|Any CPU
+	EndGlobalSection
+EndGlobal

hausuebung1_cs/.gitignore

+## Ignore Visual Studio temporary files, build results, and
+## files generated by popular Visual Studio add-ons.
+##
+## Get latest from `dotnet new gitignore`
+
+# dotenv files
+.env
+
+# User-specific files
+*.rsuser
+*.suo
+*.user
+*.userosscache
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+*.userprefs
+
+# Mono auto generated files
+mono_crash.*
+
+# Build results
+[Dd]ebug/
+[Dd]ebugPublic/
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+[Rr]eleases/
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+x86/
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+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
+bld/
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+[Ll]og/
+[Ll]ogs/
+
+# Visual Studio 2015/2017 cache/options directory
+.vs/
+# Uncomment if you have tasks that create the project's static files in wwwroot
+#wwwroot/
+
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
+# MSTest test Results
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+*.VisualState.xml
+TestResult.xml
+nunit-*.xml
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+# Build Results of an ATL Project
+[Dd]ebugPS/
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+project.fragment.lock.json
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+# ASP.NET Scaffolding
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+# StyleCop
+StyleCopReport.xml
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+# Files built by Visual Studio
+*_i.c
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+# Chutzpah Test files
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+# MightyMoose
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+# except build/, which is used as an MSBuild target.
+!**/[Pp]ackages/build/
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+# Microsoft Azure Build Output
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+
+# Microsoft Azure Emulator
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+# Windows Store app package directories and files
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+# Visual Studio cache files
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+*.[Cc]ache
+# but keep track of directories ending in .cache
+!?*.[Cc]ache/
+
+# Others
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+~$*
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+
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
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+
+# Since there are multiple workflows, uncomment next line to ignore bower_components
+# (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
+#bower_components/
+
+# RIA/Silverlight projects
+Generated_Code/
+
+# Backup & report files from converting an old project file
+# to a newer Visual Studio version. Backup files are not needed,
+# because we have git ;-)
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+Backup*/
+UpgradeLog*.XML
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+# SQL Server files
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+# Business Intelligence projects
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+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
+
+# Microsoft Fakes
+FakesAssemblies/
+
+# GhostDoc plugin setting file
+*.GhostDoc.xml
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+# Node.js Tools for Visual Studio
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+node_modules/
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+# Visual Studio 6 workspace and project file (working project files containing files to include in project)
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+
+# Visual Studio 6 technical files
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+# Visual Studio LightSwitch build output
+**/*.HTMLClient/GeneratedArtifacts
+**/*.DesktopClient/GeneratedArtifacts
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+_Pvt_Extensions
+
+# Paket dependency manager
+.paket/paket.exe
+paket-files/
+
+# FAKE - F# Make
+.fake/
+
+# CodeRush personal settings
+.cr/personal
+
+# Python Tools for Visual Studio (PTVS)
+__pycache__/
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
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+# OpenCover UI analysis results
+OpenCover/
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+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
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+
+# Visual Studio History (VSHistory) files
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+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
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+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
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+!.vscode/settings.json
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+
+# JetBrains Rider
+*.sln.iml
+.idea
+
+##
+## Visual studio for Mac
+##
+
+
+# globs
+Makefile.in
+*.userprefs
+*.usertasks
+config.make
+config.status
+aclocal.m4
+install-sh
+autom4te.cache/
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+
+# Mac bundle stuff
+*.dmg
+*.app
+
+# content below from: https://github.com/github/gitignore/blob/master/Global/macOS.gitignore
+# General
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+
+
+# Thumbnails
+._*
+
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
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+# Directories potentially created on remote AFP share
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+# content below from: https://github.com/github/gitignore/blob/master/Global/Windows.gitignore
+# Windows thumbnail cache files
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+# Dump file
+*.stackdump
+
+# Folder config file
+[Dd]esktop.ini
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+# Recycle Bin used on file shares
+$RECYCLE.BIN/
+
+# Windows Installer files
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# Windows shortcuts
+*.lnk
+
+# Vim temporary swap files
+*.swp

hausuebung1_cs/Calculator.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+
+namespace hausuebung1
+{
+    public class Calculator
+    {
+        public static double Multiplication(double a, double b)
+        {
+            return a * b;
+        }
+
+        // Aufgabe 1a: Determinante einer 3x3-Matrix berechnen
+        public static double MatrixDet3x3(double[,] mat)
+        {
+            // Überprüfen, ob die Matrix eine 3x3-Matrix ist
+            if (mat.GetLength(0) != 3 || mat.GetLength(1) != 3)
+            {
+                throw new InvalidOperationException("Die übergebene Matrix ist keine 3x3-Matrix.");
+            }
+
+            // Berechnung der Determinante mittels der Regel von Sarrus
+            double det = 0;
+            det += mat[0, 0] * (mat[1, 1] * mat[2, 2] - mat[1, 2] * mat[2, 1]);
+            det -= mat[0, 1] * (mat[1, 0] * mat[2, 2] - mat[1, 2] * mat[2, 0]);
+            det += mat[0, 2] * (mat[1, 0] * mat[2, 1] - mat[1, 1] * mat[2, 0]);
+
+            return det;
+        }
+
+        // Aufgabe 1b: Matrizenmultiplikation
+        public static double[,] MatrixMultiplication(double[,] matA, double[,] matB)
+        {
+            // Prüfen, ob das Matrixprodukt definiert ist (Anzahl der Spalten von matA == Anzahl der Zeilen von matB)
+            if (matA.GetLength(1) != matB.GetLength(0))
+            {
+                throw new InvalidOperationException("Das Matrixprodukt ist nicht definiert.");
+            }
+
+            int rowsA = matA.GetLength(0);
+            int colsA = matA.GetLength(1);
+            int colsB = matB.GetLength(1);
+
+            // Ergebnis-Matrix initialisieren
+            double[,] result = new double[rowsA, colsB];
+
+            // Berechnung des Matrixprodukts
+            for (int i = 0; i < rowsA; i++)
+            {
+                for (int j = 0; j < colsB; j++)
+                {
+                    result[i, j] = 0;
+                    for (int k = 0; k < colsA; k++)
+                    {
+                        result[i, j] += matA[i, k] * matB[k, j];
+                    }
+                }
+            }
+
+            return result;
+        }
+    }
+}
\ No newline at end of file

hausuebung1_cs/Tests/TestCalculator.cs

+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using Xunit;
+
+namespace hausuebung1.Tests
+{
+    public class TestCalculator
+    {
+        [Fact]
+        public void TestMultiplication()
+        {
+            //Arrange
+            double a = 2;
+            double b = 3;
+
+            //Act
+            double result = Calculator.Multiplication(a, b);
+
+            //Assert
+            Assert.Equal(6, result);
+        }
+
+        [Fact]
+        public void TestMatrixDet3x3()
+        {
+            //Arrange
+            double[,] matA = { { 3, 2, 1 }, { 6, 4, 5 }, { 3, 9, 7 } };
+
+            //Act
+            double result = Calculator.MatrixDet3x3(matA);
+
+            //Assert
+            Assert.Equal(-63, result);
+        }
+
+
+        [Fact]
+        public void TestMatrixDet3x3_Error()
+        {
+            //Arrange
+            double[,] matA = { { 3, 2 }, { 6, 4 }, { 3, 9 } };
+
+            //Act + Assert
+            Assert.Throws<InvalidOperationException>(() => Calculator.MatrixDet3x3(matA));
+        }
+
+        [Fact]
+        public void TestMatrixProduct_Error()
+        {
+            //Arrange
+            double[,] matA = { { 3, 2 }, { 6, 4 }, { 3, 9 } };
+            double[,] matB = { { 3, 2, 1 }, { 6, 4, 5 }, { 3, 9, 7 } };
+            //Act + Assert
+            Assert.Throws<InvalidOperationException>(() => Calculator.MatrixMultiplication(matA, matB));
+        }
+
+        [Fact]
+        public void TestMatrixProduct()
+        {
+            //Arrange
+            double[,] matA = { { 3, 2, 1 }, { 6, 4, 5 }, { 3, 9, 7 } };
+            double[,] matB = { { 3, 2, 1 }, { 6, 4, 5 }, { 3, 9, 7 } };
+            double[,] matTrue = { { 24, 23, 20 }, { 57, 73, 61 }, { 84, 105, 97 } };
+            
+            //Act
+            double[,] result = Calculator.MatrixMultiplication(matA, matB);
+
+            //Assert
+            Assert.Equal(matTrue, result);
+        }
+    }
+}

hausuebung1_cs/hausuebung1_cs.csproj

+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>net8.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="17.6.3" />
+    <PackageReference Include="xunit" Version="2.4.2" />
+    <PackageReference Include="xunit.runner.visualstudio" Version="2.4.5" />
+  </ItemGroup>
+
+</Project>