using System;

using System.Collections.Generic;

using System.Linq;

/* Add more C# standard library if it's required */

​

public class Program

{

    public class Booking

    {

        public int Id { get; set; }

        public DateTime BookingStart { get; set; }

        public DateTime BookingEnd { get; set; }

    }

​

    public class MeetingRoom

    {

        private IList<Booking> bookings = new List<Booking>

        {

            new Booking { Id = 1, BookingStart = new DateTime(2014, 1, 15, 10, 0, 0), BookingEnd = new DateTime(2014, 1, 15, 11, 0, 0) },

            new Booking { Id = 2, BookingStart = new DateTime(2014, 1, 15, 13, 0, 0), BookingEnd = new DateTime(2014, 1, 15, 14, 30, 0) },

            new Booking { Id = 3, BookingStart = new DateTime(2014, 1, 15, 16, 0, 0), BookingEnd = new DateTime(2014, 1, 15, 17, 0, 0) }

        };

​

        public bool IsAvailable(DateTime start, DateTime end)

        {

            bool available = !bookings.Any(d => (start < d.BookingEnd && end > d.BookingStart));

            return available;

        }

    }

​

    public class TestCase

    {

        public bool IsAvailable { get; set; }

        public DateTime Start { get; set; }

        public DateTime End { get; set; }

​

        public TestCase(bool isAvailable, DateTime start, DateTime end)

        {

            IsAvailable = isAvailable;

            Start = start;

            End = end;

        }

    }

​

    public static void Main()

    {

        var meetingRoom = new MeetingRoom();

        var testCases = new List<TestCase>

        {

           new TestCase(true, new DateTime(2014, 1, 15, 11, 00, 0), new DateTime(2014, 1, 15, 13, 0, 0)), //ไม่ทับซ้อน 

            /* Question 2: Write more test cases */     

            new TestCase(false, new DateTime(2014, 1, 15, 10, 30, 0), new DateTime(2014, 1, 15, 10, 50, 0)), //ทับซ้อนเวลาเริ่ม 

            new TestCase(false, new DateTime(2014, 1, 15, 11, 00, 0), new DateTime(2014, 1, 15, 13, 30, 0)), //ทับซ้อนเวลาจบ

        };

​

        var incorrect = false;

        foreach (var testCase in testCases)

        {

            if (testCase.IsAvailable != meetingRoom.IsAvailable(testCase.Start, testCase.End))

            {

                incorrect = true;

                Console.WriteLine("Incorrect case {0}-{1}", testCase.Start, testCase.End);

            }

        }

​

        if (incorrect)

        {

            Console.WriteLine("Your function is incorrect");

        }

        else

        {

            Console.WriteLine("Your function is correct");

        }

    }

}