add Programmyday form github

AudioPlayerMusterlösung/AudioFile.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AudioPlayerMusterlösung
+{
+    abstract class AudioFile
+    {
+        private string fileName;
+        public AudioFile(string filename)
+        {
+            this.fileName = filename;
+        }
+        public string GetFileName()
+        {
+            return fileName;
+        }
+        public abstract void Play();
+
+    }
+}

AudioPlayerMusterlösung/AudioPlayer.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AudioPlayerMusterlösung
+{
+    internal class AudioPlayer
+    {
+        private AudioFile[] audiofiles;
+
+        public AudioPlayer(int max)
+        {
+            audiofiles = new AudioFile[max];
+        }
+        public void AddFile(AudioFile audiofile)
+        {
+            for (int i = 0; i < audiofiles.Length; i++)
+            {
+                if (audiofiles[i] is null)
+                {
+                    audiofiles[i] = audiofile;
+                    break;
+                }
+            }
+        }
+        public void RemoveFile(int id)
+        {
+            if (id >= 0 && id < audiofiles.Length)
+            {
+                audiofiles[id] = null;
+            }
+        }
+        public void Play(int id)
+        {
+            if (id >= 0 && id < audiofiles.Length && audiofiles[id] is null)
+            {
+                audiofiles[id].Play();
+            }
+        }
+        public void PlayAll()
+        {
+            foreach (AudioFile audio in audiofiles)
+            {
+                if (audio is not null)
+                {
+                    audio.Play();
+                }
+            }
+        }
+        public void PlayShuffle()
+        {
+            Random rnd = new Random();
+            AudioFile[] playFiles = new AudioFile[audiofiles.Length];
+            for (int i = 0; i < playFiles.Length; i++)
+            {
+                playFiles[i] = audiofiles[i];
+            }
+            while (playFiles.Length > 0)
+            {
+                int playFile = rnd.Next(playFiles.Length);
+                if (playFiles[playFile] is not null)
+                {
+                    playFiles[playFile].Play();
+                }
+                AudioFile[] newArray = new AudioFile[playFiles.Length - 1];
+                for (int i = 0; i < playFile; i++)
+                {
+                    newArray[i] = playFiles[i];
+                }
+                for (int i = playFile; i < newArray.Length; i++)
+                {
+                    newArray[i] = playFiles[i + 1];
+                }
+                playFiles = newArray;
+            }
+        }
+    }
+}

AudioPlayerMusterlösung/AudioPlayerMusterlösung.csproj

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+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <OutputType>Exe</OutputType>
+    <TargetFramework>net6.0</TargetFramework>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+
+</Project>

AudioPlayerMusterlösung/FLACFile.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AudioPlayerMusterlösung
+{
+    internal class FLACFile : AudioFile
+    {
+        public FLACFile(string filename) : base(filename) { }
+        public override void Play()
+        {
+            Console.WriteLine($"FLAC: {GetFileName()}");
+        }
+    }
+}

AudioPlayerMusterlösung/MP3File.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AudioPlayerMusterlösung
+{
+    internal class MP3File : AudioFile
+    {
+        public MP3File(string filename) : base(filename) {  }
+        public override void Play()
+        {
+            Console.WriteLine($"MP3: {GetFileName()}");
+        }
+    }
+}

AudioPlayerMusterlösung/Program.cs

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+namespace AudioPlayerMusterlösung
+{
+    internal class Program
+    {
+        static void Main(string[] args)
+        {
+            AudioPlayer iPod = new AudioPlayer(99);
+            iPod.AddFile(new MP3File("titel 1"));
+            iPod.AddFile(new MP3File("titel 2"));
+            iPod.AddFile(new MP3File("titel 3"));
+            iPod.AddFile(new MP3File("titel 4"));
+            iPod.AddFile(new MP3File("titel 5"));
+            iPod.AddFile(new WAVFile("titel 6"));
+            iPod.AddFile(new WAVFile("titel 7"));
+            iPod.AddFile(new WAVFile("titel 8"));
+            iPod.AddFile(new WAVFile("titel 9"));
+            iPod.AddFile(new WAVFile("titel 10"));
+            iPod.AddFile(new WAVFile("titel 11"));
+            iPod.AddFile(new WAVFile("titel 12"));
+            iPod.AddFile(new FLACFile("titel 13"));
+            iPod.AddFile(new FLACFile("titel 14"));
+            iPod.AddFile(new FLACFile("titel 15"));
+            iPod.AddFile(new FLACFile("titel 16"));
+            iPod.AddFile(new FLACFile("titel 17"));
+            iPod.AddFile(new FLACFile("titel 18"));
+            iPod.AddFile(new MP3File("titel 19"));
+            iPod.AddFile(new MP3File("titel 20"));
+
+            iPod.PlayAll();
+            Console.WriteLine();
+            iPod.PlayShuffle();
+        }
+    }
+}

AudioPlayerMusterlösung/WAVFile.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AudioPlayerMusterlösung
+{
+    internal class WAVFile : AudioFile
+    {
+        public WAVFile(string filename) : base(filename) { }
+        public override void Play()
+        {
+            Console.WriteLine($"WAV: {GetFileName()}");
+        }
+    }
+}