// Реализация через Regex

​

using System;

using System.Diagnostics;

using System.Text;

using System.Text.RegularExpressions;

​

class Program

{

    static void Main()

    {

        string input = "OPEN GIRL, I will make you Happy Everyday...😋😋😋 I'm looking for a man who can appreciate me . Kisses. OPEN GIRL, I will make you Happy Everyday...😋😋😋 I'm looking for a man who can appreciate me . Kisses. OPEN GIRL, I will make you Happy Everyday...😋😋😋 I'm looking for a man who can appreciate me . Kisses. OPEN GIRL, I will make you Happy Everyday...😋😋😋 I'm looking for a man who can appreciate me . Kisses";

​

        const int iterations = 5;

        long totalElapsedTimeWrap = 0;

        long totalElapsedTimeRemove = 0;

​

        string result = "";

        string wrappedText = "";

​

        string pattern = @"\p{Cs}|\p{Co}\p{Cf}*";

        Regex regex = new Regex(pattern);

        string replacePattern = @"<nt>|</nt>";

        Regex replaceRegex = new Regex(replacePattern);

​

        for (int i = 0; i < iterations; i++)

        {

            Stopwatch stopwatchWrap = Stopwatch.StartNew();

            for (int j = 0; j < 100000; j++)

            {

                wrappedText = WrapEmojisWithTag(input, regex);

            }

            stopwatchWrap.Stop();

            totalElapsedTimeWrap += stopwatchWrap.ElapsedMilliseconds;

​

            Stopwatch stopwatchRemove = Stopwatch.StartNew();

            for (int j = 0; j < 100000; j++)

            {

                result = RemoveXmlTags(input, replaceRegex);

            }

            stopwatchRemove.Stop();

            totalElapsedTimeRemove += stopwatchRemove.ElapsedMilliseconds;

​

            Console.WriteLine($"Iteration {i + 1}: Wrap Elapsed time: {(double)stopwatchWrap.ElapsedMilliseconds / 100000} ms, Remove Elapsed time: {stopwatchRemove.ElapsedMilliseconds} ms");

        }

​

        double averageElapsedTimeWrap = (double)totalElapsedTimeWrap / iterations / 100000;

        double averageElapsedTimeRemove = (double)totalElapsedTimeRemove / iterations / 100000;

        Console.WriteLine($"Average Wrap Elapsed Time: {averageElapsedTimeWrap} ms");

        Console.WriteLine($"Average Remove Elapsed Time: {averageElapsedTimeRemove} ms");

        Console.WriteLine();

        Console.WriteLine($"WrappedText: {wrappedText}");

        Console.WriteLine();

        Console.WriteLine($"Result: {result}");

    }

​

    static string WrapEmojisWithTag(string input, Regex regex)

    {

        string result = regex.Replace(input, match => $"<nt>{match.Value}</nt>");

        return result;

    }

​

    static string RemoveXmlTags(string input, Regex regex)

    {

        string result = regex.Replace(input, match => String.Empty);

        return result;

    }

}