using Newtonsoft.Json;

using System;

using System.Collections.Generic;

using Formatting = Newtonsoft.Json.Formatting;

​

/*

    Tasks

    1. Remove the duplicate vessels, order the dates by the most recent first

    2. output the deduplicated MotorVessel's

    3. Reorder the properties of the motor vessels so that the engineCount appears last

*/

​

public class Program

{

    private static IEnumerable<Vessel> VesselData { get; set; }

​

    public class Vessel

    {

        public string VesselId { get; set; }

​

        public string VesselName { get; set; }

​

        public DateTime Created { get; set; }

    }

​

    public class SailingVessel : Vessel

    {

        public int SailCount { get; set; }

    }

​

    public class MotorVessel : Vessel

    {

        public int EngineCount { get; set; }

    }

​

    public static void Main()

    {

        SetUp();

​

        Console.WriteLine(JsonConvert.SerializeObject(VesselData, Formatting.Indented));

    }

​

    public class Person

    {

        public string Name { get; set; }

        public int Age { get; set; }

    }

​

    private static void SetUp()

    {

        var now = DateTime.Now;

        VesselData = new List<Vessel>

        {

            new MotorVessel{VesselId = "3", VesselName = "Motorboat 2", Created = now.AddDays(-3), EngineCount = 2},

            new MotorVessel{VesselId = "1", VesselName = "Motorboat 1", Created = now.AddDays(-2), EngineCount = 2},

            new SailingVessel{VesselId = "2", VesselName = "Sailboat 1", Created = now.AddDays(-1), SailCount = 2},

            new MotorVessel{VesselId = "1", VesselName = "Motorboat 1", Created = now, EngineCount = 1}

        };

  }

}