using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Threading.Tasks;

namespace StringBuilder的使用
{
  class Program
  {
    static void Main(string[] args)
    {
      StringBuilder s = new StringBuilder();
      long dataStart = DateTime.Now.Ticks;
      for (int i = 0; i < 1000; i++)
      {
        s.Append('a', i);
      }
      long dataEnd = DateTime.Now.Ticks;
      Console.WriteLine(s.Capacity);
      Console.WriteLine("用时：{0}", (dataEnd - dataStart) / 100000.0);
      dataStart = DateTime.Now.Ticks;
      for (int i = 0; i < 1000; i++)
      {
        s.Append('a', i);
        if (s.Capacity < s.Length)
        {
          s.Capacity += 8;
        }
      }
      dataEnd = DateTime.Now.Ticks;
      Console.WriteLine("用时：{0}", (dataEnd - dataStart) / 100000.0);
      Console.Read();
    }
  }
}