using NUnit.Framework;

using System;

using System.Collections.Generic;

using System.Linq;

using System.Text;

using System.Threading.Tasks;

public class Program

{

    public static void Main()

    {

        CombinationsTest();

        TwoSumTest();

        DictionaryExtensionTest();

    }

    [Test]

    public static void CombinationsTest()

    {

        // ***************************************************************************************************************

        // Question One 

        // Given a list of integers, check if the sum of any two integers in the list is not contained in the list.

        // For example, with the list [4, 5, 15, 2, 8], there is no pair of integers where their sum is in the list. 

        // The list [8, 7, 5, 3] does not satisfy the criteria since the sum of 5 and 3 is in the list.

        // 

        // Write unit tests to prove the correctness of your approach with both True and False examples.

        // ***************************************************************************************************************

        var listOne = new List<int>() { 4, 5, 15, 2, 8 };

        var listTwo = new List<int>() { 8, 7, 5, 3 };

        var listThree = new List<int>() { 1, 2, 3, 4 };

        var listFour = new List<int>() { 5, 15, 21, 90 };

    }

    [Test]

    public static void TwoSumTest()

    {

        // ***************************************************************************************************************

        // Question Two

        // Given an array of integers and a target, return the indices of the two numbers whose sum is the given target.

        //

        // Write unit tests to prove the correctness of your approach with both True and False examples.

        // ***************************************************************************************************************

        var listOne = new List<int>() {9, 7, 21, 40};

        var target = 61;

    }

    [Test]

    public static void DictionaryExtensionTest()

    {

        // ***************************************************************************************************************

        // Question Three

        // Write an extension method that will search a dictionary by value, and return the value if it is present; otherwise, it should

        // return null

        //

        // Write unit tests to prove the correctness of your approach with both True and False examples.

        // ***************************************************************************************************************

    }

        // ***************************************************************************************************************

        // Question Four

        // Rewrite the following Delphi program in C# and explain in words what the program is doing.

        //

        // ***************************************************************************************************************

        // ***************************************************************************************************************

        // Delphi Code

        //type

        //  TUnit = record

        //    Status: string;

        //  end;

        //    

        //const

        //  UnitStatuses: array [1..5] of string =

        //  (

        //    'CLEARED', 'ON SCENE', 'EN ROUTE', 'MEAL', 'OFF DUTY'

        //  );

        //

        //procedure PrintStatusList(MyUnit: TUnit);

        //var 

        //  k: integer; 

        //  DoPrint: boolean;

        //begin

        //  for k:=1 to high(UnitStatuses) do

        //    begin

        //      DoPrint := UnitStatuses[k] <> MyUnit.Status;

        //      if (DoPrint) then

        //      begin

        //        WriteLn(UnitStatuses[k]);

        //      end;

        //    end;

        //end;

        //

        //var

        //  myUnit: TUnit;

        //begin

        //  myUnit.Status := 'CLEARED';

        //  PrintStatusList(myUnit);

        //

        //  myUnit.Status := 'ON SCENE';

        //  PrintStatusList(myUnit);

        //end.

        //

        // ***************************************************************************************************************

        // Write your code here

        //

}