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Heike 2
Luna 2
Bernd 4
Ilona 15
Jenny 8
Heiko 13                    

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    public class Program
    {
        static void Main(string[] args)
        {
            // unsortierte Ausgangsliste
            List<Player> players = new List<Player>()
            {
                new() { Name = "Heike", Try = 2 },
                new() { Name = "Luna", Try = 2 },
                new() { Name = "Bernd", Try = 4 },
                new() { Name = "Ilona", Try = 15 },
                new() { Name = "Jenny", Try =  8 },
                new() { Name = "Heiko", Try =  8 },
            };

            // in file schreiben
            var fileContentToBeWritten = JsonSerializer.Serialize(players);
            File.WriteAllText("C:/test/players.json", fileContentToBeWritten);

            // aus file lesen
            var fileContentRead = File.ReadAllText("C:/test/players.json");
            players = JsonSerializer.Deserialize<List<Player>>(fileContentRead);

            // sortieren und ausgeben
            var sortedplayers = players.OrderBy(x => x.Try).ToList();

            Console.WriteLine("Rangliste");
            foreach (var player in sortedplayers)
                Console.WriteLine($"{player.Name}   {player.Try}");
        }
    }

    public class Player
    {
        public string Name { get; set; }
        public int Try { get; set; }
    }                    

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Rangliste
Heike   2
Luna   2
Bernd   4
Jenny   8
Heiko   8
Ilona   15