07. Order By Age

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

namespace OrderByAge
{
    class Person
    {
        public Person(string name, string id, int age)
        {
            this.Name = name;
            this.ID = id;
            this.Age = age;
        }

        public string Name { get; set; }
        public string ID { get; set; }

        public int Age { get; set; }

    }

    class Program
    {
        public static void Main()
        {
            List<Person> people = new List<Person>();

            string command;

            while ((command = Console.ReadLine()) != "End")
            {
                string[] personInfo = command.Split(" ");
                string name = personInfo[0];
                string id = personInfo[1];
                int age = int.Parse(personInfo[2]);

                int idIndex = people.FindIndex(x => x.ID == id);

                if (idIndex == -1)
                {
                    people.Add(new Person(name, id, age));
                }
                else
                {
                    people[idIndex].Name = name;
                    people[idIndex].Age = age;
                }
            }

            foreach (var p in people.OrderBy(x => x.Age))
            {
                Console.WriteLine($"{p.Name} with ID: {p.ID} is {p.Age} years old.");
            }
        }
    }
}