using System;

using System.Collections.Generic;

using System.Linq;

​

public class Program

{

    public class Employee

    {

        public int Id { get; set; }

        public string Name { get; set; }

        public int DepartmentId { get; set; }

    }

    public class Department

    {

        public int Id { get; set; }

        public string Name { get; set; }

    }

    public static void Main()

    {

        List<Department> Departments = new List<Department> {

            new Department { Id = 1, Name = "Marketing" },

            new Department { Id = 2, Name =  "HR" },

            new Department { Id = 3, Name = "Production" },

            new Department { Id = 4, Name = "Advertising" }

        };

        List<Employee> Employees = new List<Employee> {

            new Employee { Id = 1, Name = "Ramesh", DepartmentId = 1 },

            new Employee { Id = 2, Name = "Michael", DepartmentId = 2 },

            new Employee { Id = 3, Name = "Arjun", DepartmentId = 3 },

            new Employee { Id = 4, Name = "Sunil", DepartmentId = 1 },

            new Employee { Id = 5, Name = "Geroge", DepartmentId = 4 }

        };

        // Question: Join Employees with Departments and get Employee.Id, Employee.Name, Department.Name

    }

}