Use Stopwatch to benchmark the StringBuilder - CSharp Language Basics

CSharp examples for Language Basics:StringBuilder

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Description

Use Stopwatch to benchmark the StringBuilder

Demo Code

using System;/*ww w.ja  v  a  2s.  c om*/
using System.Diagnostics;
using System.Linq;
using System.Net.Http;
using System.Threading.Tasks;
using static System.Console;
using static System.Diagnostics.Process;
class Program
{
   static void  Main(string[] args)
   {
      int[] numbers = Enumerable.Range(1, 50000).ToArray();
      Recorder.Start();
      WriteLine("Using string");
      string s = "";
      for (int i = 0; i < numbers.Length; i++)
      {
         s += numbers[i] + ", ";
      }
      Recorder.Stop();
      Recorder.Start();
      WriteLine("Using StringBuilder");
      var builder = new System.Text.StringBuilder();
      for (int i = 0; i < numbers.Length; i++)
      {
         builder.Append(numbers[i]);
         builder.Append(", ");
      }
      Recorder.Stop();
      ReadLine();
   }
}
public static class Recorder
{
   static Stopwatch timer = new Stopwatch();
   static long bytesPhysicalBefore = 0;
   static long bytesVirtualBefore = 0;
   public static void Start()
   {
      GC.Collect();
      GC.WaitForPendingFinalizers();
      GC.Collect();
      bytesPhysicalBefore = GetCurrentProcess().WorkingSet64;
      bytesVirtualBefore = GetCurrentProcess().VirtualMemorySize64;
      timer.Restart();
   }
   public static void Stop()
   {
      timer.Stop();
      long bytesPhysicalAfter = GetCurrentProcess().WorkingSet64;
      long bytesVirtualAfter = GetCurrentProcess().VirtualMemorySize64;
      WriteLine("Stopped recording.");
      WriteLine($"{bytesPhysicalAfter - bytesPhysicalBefore:N0} physical bytes used.");
      WriteLine($"{bytesVirtualAfter - bytesVirtualBefore:N0} virtual bytes used.");
      WriteLine($"{timer.Elapsed} time span ellapsed.");
      WriteLine($"{timer.ElapsedMilliseconds:N0} total milliseconds ellapsed.");
   }
}

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