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  1. using System;
  2. using System.Diagnostics;
  3. using System.Collections.Generic;
  4. using System.Linq;
  5. using System.Text;
  6.  
  7. namespace ConsoleApplication1
  8. {
  9.   class Program
  10.   {
  11.     static void Main(string[] args)
  12.     {
  13.       Stopwatch watch;
  14.  
  15.       string a, b, c, d, e, f, g, h;
  16.       SetString(out a, out  b, out  c, out d, out e, out f, out g, out h);
  17.  
  18.       int count = 100000;
  19.       string[] s = new string[count];
  20.  
  21.       for (int loop = 0; loop < 4; loop++)
  22.       {
  23.         watch = Stopwatch.StartNew();
  24.         for (int i = 0; i < count; i++)
  25.         {
  26.           //s[i] = a + b + c + d + e + f + g + h;
  27.           s[i] = a;
  28.           s[i] += b;
  29.           s[i] += c;
  30.           s[i] += d;
  31.           s[i] += e;
  32.           s[i] += f;
  33.           s[i] += g;
  34.           s[i] += h;
  35.         }
  36.         watch.Stop();
  37.         Console.WriteLine("+:" + watch.ElapsedMilliseconds);
  38.  
  39.         watch = Stopwatch.StartNew();
  40.         for (int i = 0; i < count; i++)
  41.         {
  42.           StringBuilder bulder = new StringBuilder();
  43.           bulder.Append(a).Append(b).Append(c).Append(d).Append(e).Append(f).Append(g).Append(h);
  44.           s[i] = bulder.ToString();
  45.         }
  46.         watch.Stop();
  47.         Console.WriteLine("StringBuilder:" + watch.ElapsedMilliseconds);
  48.       }
  49.     }
  50.  
  51.     [System.Runtime.CompilerServices.MethodImpl(System.Runtime.CompilerServices.MethodImplOptions.NoInlining)]
  52.     static void SetString(out string a, out string b, out string c, out string d, out string e, out string f, out string g, out string h)
  53.     {
  54.       a = "AAAAAAAAAAAAAAAAA";
  55.       b = "BBBBBBBBBBBBBBBBBBBBBBBB";
  56.       c = "CCCCCCCCCCCCCCCCCCCC";
  57.       d = "DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD";
  58.       e = "EEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEEE";
  59.       f = "FFFFFFFFFFFFFFFFFFFFFF";
  60.       g = "GGGGGGGGGGGGGGGGG";
  61.       h = "HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH";
  62.     }
  63.  
  64.   }
  65. }
  66.  
Not running #stdin #stdout 0s 0KB
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stdout 
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https://ideone.com/0lEHf
language:
C# (gmcs 5.20.1)
created:
12 years ago
visibility:
public

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