using System;

using System.Collections.Generic;

​

public class Program

{

    public static void Main()

    {

        var service = new EntityService();

        service.EnsureChildRecords(100);

        service.EnsureChildRecords(200);

        var expected = 10;

        var childCount = service.GetChildRecords(100).Count;        

        Console.WriteLine(childCount == expected ? "PASS" : "FAIL, child count is " + childCount);

​

        childCount = service.GetChildRecords(200).Count;        

        Console.WriteLine(childCount == expected ? "PASS" : "FAIL, child count is " + childCount);

    }

}

​

// INSTRUCTIONS:

​

// We have a backend operation that adds 7 Child records to most entities; some entities

// have no Child records.  We are now adding functionality that requires certain entities

// to have no fewer than 10 Child records.

​

// Flesh out EnsureChildRecords() so that it makes sure the specified entity has at least

// 10 Child records.  Assume CreateChildRecord() performs whatever work is necessary to

// add the record to the database.  Both tests in Main() should PASS.

​

public class EntityService

{

    Dictionary<int, List<Child>> db = new Dictionary<int, List<Child>>();

    public EntityService()

    {

        // Initialize the fake database

        db.Add(100, new List<Child>());

        for (int a = 0; a < 7; a++)

            CreateChildRecord(100);

        db.Add(200, new List<Child>());

    }

    public void EnsureChildRecords(int entityId)

    {

        var existingRecords = GetChildRecords(entityId);

        // Your code:

        //Console.WriteLine(existingRecords.Count);

        //check childcount of existingRecords

        //if entity has AT LEAST 10 child records

        //false then assign more child records to entity 

        //true then move to next entity or just end method

        if (existingRecords.Count < 10)

        {

            //add child to the existingRecords but not sure how to add a child 

            //test output to make sure in right statement 

            Console.WriteLine("This current record has less than 10 children ");

        }

        else

        {

            Console.WriteLine("This current record has 10 or more children already");

        }

    }

    // ***** No need to modify anything below this point *****

    private void CreateChildRecord(int entityId)

    {

        db[entityId].Add(new Child());

    }

    public List<Child> GetChildRecords(int entityId)

    {

        return db[entityId];

    }

}

​

public class Child

{

    // Actual properties don't matter 

}