using System;

using System.Collections.Generic;

using System.Linq;

​

using RandomNameGeneratorLibrary;

public class Program

{

    public static void Main()

    {

        var searchedIds = new List<int> { 1, 3, 5, 100, 23, 2, 44, 170, 999, 821, 300 };

        for (var i = 1000; i< 2000; i++) searchedIds.Add(i);

        var users = GenerateTestList();

​

        // TASK: Implement method functionality

        var filteredUsers = FindUsersById(users, searchedIds);

        Console.WriteLine(string.Join(",", filteredUsers.Select(x => x.Name).ToList()));

    }

    // WRITE YOUR CODE HERE

    private static IEnumerable<User> FindUsersById(IEnumerable<User> list, IEnumerable<int> ids) {

        return new List<User>();

    }

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

    // NOT IN THE TEST SCOPE 

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

    // This method is for the data mock and is not in the test scope.

    private static IEnumerable<User> GenerateTestList() {

        var personGenerator = new PersonNameGenerator();

        for (var i=0; i < 10000; i++) {

            var user = new User {

                Id = i,

                Name = personGenerator.GenerateRandomFirstAndLastName()

            };

            yield return user;

        }

    }

}

​

public class User {

    public int Id { get; set; }

    public string Name { get; set; }

}