[开发笔记]-分隔字符串

keyup(function () {
                this.value = this.value.replace(/[^\w{8}\d{8}]/g, "").replace(/(\w{4})(?=\w)/g, "$1 ");
            });

  static void Main(string[] args)
        {
            
            //int count = 13;
            //int spt = 4;
            //var xx = Math.Ceiling((double)count / spt);

            //Console.Write(xx);


            string str = "KEI4DXER345";
            int spt = 4;
            var xx = Math.Ceiling((double)str.Length/spt);

            string result = string.Empty;
            for (int i = 0; i < xx-1; i++)
            {
                result += str.Substring((i * 4), 4) + " ";
            }

            result += str.Substring(((int)(xx-1) * 4));

            Console.Write("result:   [{0}]  ",result);