03_Articles_2_0

using System;
using System.Linq;
using System.Collections.Generic;

namespace _03_Articles_2_0
{
    class Program
    {
        static void Main()
        {
            int SubmmitnArticles = int.Parse(Console.ReadLine());
            List<Article> articles = new List<Article>();
            for (int i = 1; i <= SubmmitnArticles; i++)
            {
                string[] input = Console.ReadLine().Split(", ");
                Article article = new Article(input[0], input[1], input[2]);
                articles.Add(article);
            }
            string ExecuteOperation = Console.ReadLine();
            switch (ExecuteOperation)
            {
                case "title":
                    articles = articles.OrderBy(x => x.Title).ToList();
                    break;
                case "content":
                    articles = articles.OrderBy(x => x.Content).ToList();
                    break;
                case "author":
                    articles = articles.OrderBy(x => x.Author).ToList();
                    break;
            }
            Console.WriteLine(string.Join(Environment.NewLine, articles));
        }
    }

    class Article
        {
        public string Title { get; set; }
        public string Content { get; set; }
        public string Author { get; set; }

        public Article(string title, string content, string author)
        {
            this.Title = title;
            this.Content = content;
            this.Author = author;
        }

        public override string ToString()
        {
            return $"{this.Title} - { this.Content}: { this.Author}";
        }
        }
}