Code Challenge for Horoscope

RobotProblemSophieTagar.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace Robot
{
    class Program
    {
        static void Main(string[] args)
        {

            Robot my_robot = Robot.Instance;

            my_robot.InstallChip(new SortChip());
            List<int> SortedArray = my_robot.executeChipe().Arr;

            my_robot.InstallChip(new TotalChip());
            int TotalSum = my_robot.executeChipe().Number;

            PrintResults(SortedArray, TotalSum, my_robot.NumOfChips, my_robot.Name);

        }

        static void PrintResults(List<int> SortedArray, int TotalSum, int NumberOfChips, string Name)
        {
            string sorted_array = "";

            for (int i = 0; i < SortedArray.Count; i++)
            {
                if (i < SortedArray.Count - 1)
                    sorted_array += SortedArray[i] + ", ";
                else
                    sorted_array += SortedArray[i];
            }
            Console.WriteLine("Hi! I'm " + Name + " and thoes are my results:");
            Console.WriteLine("Sorted array: " + sorted_array);
            Console.WriteLine("Total sum: " + TotalSum.ToString());
            Console.WriteLine("Number of chips installed: " + NumberOfChips.ToString());
            Console.ReadLine();
        }
    }

    public sealed class Robot
    {
        private string name = "R2-D2";
        private static Robot instance = null;
        Chip InstalledChip = null;
        private List<Chip> ChipsArchive = new List<Chip>();
        public List<int> arr = new List<int>() { 3, 5, 1, 0, 7, 4, 99 };

        public string Name
        {
            get
            {
                return this.name;
            }
        }

        public static Robot Instance
        {
            get
            {
                if (instance == null)
                    instance = new Robot();

                return instance;
            }
        }

        public int NumOfChips
        {
            get
            {
                return this.ChipsArchive.Count;
            }
        }

        private Robot() { }

        public void InstallChip(Chip New_Chip)
        {
            ChipsArchive.Add(New_Chip);

            InstalledChip = ChipsArchive.Last();
        }


        public Type executeChipe()
        {
            return this.InstalledChip.Action(this.arr);
        }

    }

    // I can also use an Interface
    public abstract class Chip
    {
        public virtual Type Action(List<int> arr) { return new Type(); }
    }

    public class SortChip : Chip
    {

        public override Type Action(List<int> arr)
        {
            string asc;
            Console.WriteLine("Sort in ascending order? yes/no");
            asc = Console.ReadLine();
            Type res = new Type();

            while (asc.ToLower() != "yes" && asc.ToLower() != "no")
            {
                Console.WriteLine("Sort in ascending order? yes/no");
                asc = Console.ReadLine();
            }

            if (asc.ToLower() == "yes")
            {
                arr.Sort();
            }
            else
            {
                arr.Sort();
                arr.Reverse();
            }

            res.Arr = arr;
            return res;
        }

    }

    public class TotalChip : Chip
    {

        public override Type Action(List<int> arr)
        {
            int sum = 0;
            Type res = new Type();
            for (int i = 0; i < arr.Count; i++)
            {
                sum += arr[i];
            }

            res.Number = sum;
            return res;
        }
    }

    public class Type
    {
        int number;
        List<int> arr;

        public int Number
        {
            get
            {
                return this.number;
            }
            set
            {
                this.number = value;
            }
        }

        public List<int> Arr
        {
            get
            {
                return this.arr;
            }
            set
            {
                this.arr = value;
            }
        }

    }

}

SecondCodeChallenge.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace OpeningHours
{
    class Program
    {
        static void Main(string[] args)
        {
            List<string> days = new List<string> {"Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday", "Sunday"};
            string opening_time1 = "10:00a - 06:00m";
            string opening_time2 = "10:00a - 07:00m";
            string close = "Closed";
            List<string> opening_Time = new List<string>() {opening_time1, opening_time1, opening_time1, opening_time2, opening_time1, opening_time1, close };

            Week MyWeek = new Week(days, opening_Time);
            string p = "";

            for(int i = 0; i < MyWeek.days.Count; i++)
            {
                p = MyWeek.days[i]; 

                for (int j = 0; j < (10 - days[i].Length); j++)
                {
                    p += " ";
                }

                p += MyWeek.OpeningTime[i];

                Console.WriteLine(p);
            }

            Console.ReadLine();
        }
    }

    public class Week
    {
        public List<DayOfWeek> WeekDays = new List<DayOfWeek>();
        public List<string> days = new List<string>(); 
        public List<string> OpeningTime = new List<string>();

        public Week(List<string> days, List<string> OpeningTime)
        { 
            this.days = days;
            this.OpeningTime = OpeningTime;
            for(int i = 0; i < this.days.Count; i++)
            {
                WeekDays.Add(new DayOfWeek(days[i], OpeningTime[i]));
            }
        }

     }

    public class DayOfWeek
    {
        string name;
        string OpeningTime;

        public DayOfWeek(string name, string opening_time)
        {
            this.name = name;
            this.OpeningTime = opening_time;
        }

    }

    
}