//分割字符串效率比较        public static void Fund()        {            //1.用string.Split方法            //a.字节数组：            //625毫秒/百万次            string str1 = "acabcdeabcdeabcde";            string[] strArr1 = null;            System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();            sw.Start();            for (int i = 0; i < 10000000; i++)            {                strArr1 = str1.Split(new char[1] { ‘c‘ });            }            sw.Stop();            Console.WriteLine(sw.ElapsedMilliseconds);//以毫秒为单位            //b.字符串数组            //703毫秒/百万次            string str3 = "acabcdeabcdeabcde";            string[] strArr3 = str3.Split(new string[1] { "cde" }, StringSplitOptions.None);            //2.Regex.Split方法            //7093毫秒/百万次            string str4 = "acabcdeabcdeabcde";            string[] strArr4 = Regex.Split(str4, "cde");        }