контрольная

 using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Text.RegularExpressions;
using System.Threading.Tasks;
using System.Diagnostics;
using System.Threading;
using System.IO;

namespace контрольная
{
    class Program
    {
        static long SumStringBuilder(StringBuilder text)
        {
            long Sum = 0;
            StringBuilder Number = new StringBuilder("0");
            for (int i = 0; i < text.Length; i++)
            {
                while((i < text.Length)&&(char.IsDigit(text[i])) )
                {
                    Number.Append(text[i]);
                    i++;
                }
                Sum += long.Parse(Number.ToString());
                Number.Remove(1,Number.Length-1);
            }
            return Sum;
        }

        static long SumRegular(string text)
        {
            Regex r = new Regex(@"\d+");
            Match number = r.Match(text);
            long Sum = 0;
            while (number.Success)
            {
                Sum += long.Parse(number.ToString());
                number = number.NextMatch();
            }
            return Sum;
        }

        static long SumString(string text)
        {
            long Sum = 0;
            string Number = ("0");
            for (int i = 0; i < text.Length; i++)
            {
                while ((i < text.Length) && (char.IsDigit(text[i])))
                {
                    Number += text[i];
                    i++;
                }
                Sum += long.Parse(Number);
                Number = Number.Remove(1, Number.Length-1);
            }
            return Sum;
        }

        //static string RandomString(int length)
        //{
        //    const string chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 ;.,/'!?<>{}[]:+-_=";
        //    var random = new Random();
        //    return new string(Enumerable.Repeat(chars, length)
        //      .Select(s => s[random.Next(s.Length)]).ToArray());
        //}

        static void Print(string temp2, StreamWriter fout)
        {
            StringBuilder temp1 = new StringBuilder(temp2);

            Stopwatch time1 = new Stopwatch();
            time1.Start();
            fout.WriteLine("SumStringBuilder: {0}", SumStringBuilder(temp1));
            time1.Stop();
            long milliSec1 = time1.ElapsedMilliseconds;
            fout.WriteLine("Time spand for StringBuilder: {0}", milliSec1);

            Stopwatch time2 = new Stopwatch();
            time2.Start();
            fout.WriteLine("SumRegular: {0}", SumRegular(temp2));
            time2.Stop();
            long milliSec2 = time2.ElapsedMilliseconds;
            fout.WriteLine("Time spand for RegularExpression: {0}", milliSec2);

            Stopwatch time3 = new Stopwatch();
            time3.Start();
            fout.WriteLine("SumString: {0}", SumString(temp2));
            time3.Stop();
            long milliSec3 = time3.ElapsedMilliseconds;
            fout.WriteLine("Time spand for String: {0}", milliSec3);

            fout.WriteLine();
        }

        static void Main(string[] args)
        {
            StreamWriter fout = new StreamWriter("c:/users/администратор/documents/visual studio 2012/Projects/контрольная/контрольная/output.txt",true);

            //string first = RandomString(50);
            //fout.WriteLine("Test1 (50 symbols): {0}", first);
            //fout.WriteLine();
            //Print(first, fout);

            //string second = RandomString(1000);
            //fout.WriteLine("Test2 (1000 symbols): {0}", second);
            //fout.WriteLine();
            //Print(second, fout);

            //string third = RandomString(10000);
            //fout.WriteLine("Test3 (10000 symbols): {0}", third);
            //fout.WriteLine();
            //Print(third, fout);

            //string fourth = RandomString(100000);
            //fout.WriteLine("Test4 (100000 symbols): {0}", fourth);
            //fout.WriteLine();
            //Print(fourth, fout);

            //string fifth = RandomString(1000000);
            //fout.WriteLine("Test5 (100000 symbols): {0}", fifth);
            //fout.WriteLine();
            //Print(fifth, fout);

            string first = "PDM>PT{X6:'[O<7BYWR}9[HYJN5[ /OS>CIBFMB,2>;B4>A1;7";
            fout.WriteLine("Test1 (50 symbols):");
            fout.WriteLine();
            Print(first, fout);

            StreamReader fin2 = new StreamReader(("c:/users/администратор/documents/visual studio 2012/Projects/контрольная/контрольная/input2.txt"));
            string second = fin2.ReadLine();
            fin2.Close();
            fout.WriteLine("Test2 (1000 symbols):");
            fout.WriteLine();
            Print(second, fout);

            StreamReader fin3 = new StreamReader(("c:/users/администратор/documents/visual studio 2012/Projects/контрольная/контрольная/input3.txt"));
            string third = fin3.ReadLine();
            fin3.Close();
            fout.WriteLine("Test3 (10000 symbols):");
            fout.WriteLine();
            Print(third, fout);

            StreamReader fin4 = new StreamReader(("c:/users/администратор/documents/visual studio 2012/Projects/контрольная/контрольная/input4.txt"));
            string fourth = fin4.ReadLine();
            fin4.Close();
            fout.WriteLine("Test4 (100000 symbols):");
            fout.WriteLine();
            Print(fourth, fout);

            StreamReader fin5 = new StreamReader(("c:/users/администратор/documents/visual studio 2012/Projects/контрольная/контрольная/input5.txt"));
            string fifth = fin5.ReadLine();
            fin5.Close();
            fout.WriteLine("Test5 (1000000 symbols):");
            fout.WriteLine();
            Print(fifth, fout);


            fout.Close();
        }
    }
}