using System.Net.Http;

using System;

using System.Collections.Generic;

using System.Text;

​

using Newtonsoft.Json;

​

public class VirtusaHomeTest

{

    private static readonly APIProblem aPIProblem;

    private static readonly StringProblem stringProblem;

    static VirtusaHomeTest()

    {

        aPIProblem = new APIProblem();

        stringProblem = new StringProblem();

    }

​

    public static void Main()

    {

        while (true)

        {

            Console.WriteLine("\n1. String difference solution");

            Console.WriteLine("2. API solution");

            Console.WriteLine("Choose: ");

            int n = Convert.ToInt32(Console.ReadLine());

            switch (n)

            {

                case 1:

                    {

                        Console.WriteLine("Enter first string");

                        string str1 = Console.ReadLine();

                        Console.WriteLine("Enter second string");

                        string str2 = Console.ReadLine();

                        stringProblem.StringDifference(str1.ToUpper(), str2.ToUpper());

                        break;

                    }

                case 2:

                    {

                        aPIProblem.ShowEmailsForAll();

                        break;

                    }

                default: return;

            }

        }

    }

}

​

public class StringProblem

{

    public void StringDifference(string str1, string str2)

    {

        StringBuilder out1 = new StringBuilder();

        StringBuilder out2 = new StringBuilder();

        foreach (char c in str1)

        {

            if (!str2.Contains(c))

            {

                out1.Append(c);

            }

        }

​

        foreach (char c in str2)

        {

            if (!str1.Contains(c))

            {

                out2.Append(c);

            }

        }

​

        Console.WriteLine(out1);

        Console.WriteLine(out2);

    }

}

​

public class APIProblem

{

    HttpClient client;

    List<int> userIds;

​

    public APIProblem()

    {

        client = new HttpClient();

        userIds = new List<int> { 1, 3, 10 };

    }

​

    public void ShowEmailsForAll()

    {

        try

        {

            foreach (int i in userIds)

            {

                var res = client.GetAsync($"https://reqres.in/api/users/{i}").Result;

                if (res.IsSuccessStatusCode)

                {

                    Console.WriteLine(JsonConvert.DeserializeObject<UserResponse>(res.Content.ReadAsStringAsync()?.Result)?.UserDetails?.Email);

                }

            }

        }

        catch (Exception ex)

        {

            Console.WriteLine(ex);

        }

    }

}

​

public class UserResponse

{

    [JsonProperty("data")]

    public UserDetails UserDetails { get; set; }

}

​

public class UserDetails

{

    [JsonProperty("id")]

    public long Id { get; set; }

​

    [JsonProperty("email")]

    public string Email { get; set; }

​

    [JsonProperty("first_name")]

    public string FirstName { get; set; }

​

    [JsonProperty("last_name")]

    public string LastName { get; set; }

​

    [JsonProperty("avatar")]

    public Uri Avatar { get; set; }

}