C#正则分组实例

 static void Main(string[] args)
        {
            string str = "大家家家家家家家明天天天天天天天天玩得得得得得得得开心";
            Regex reg = new Regex(@"(?<wdq>.)\<wdq>{2,}");
            var ms = reg.Matches(str);
            Console.WriteLine("一共" + ms.Count + "组");
            foreach (Match item in ms)
            {
                Console.WriteLine(item.Groups["wdq"]);
                Console.WriteLine(item.Value);
                Console.WriteLine("------------------");
            }
            Console.ReadKey();
        }

 static void Main(string[] args)
        {
            string str = "大家家家家家家家明天天天天天天天天玩得得得得得得得开心";
            Regex reg = new Regex(@"(?<wdq>.)\1{2,}");
            var ms = reg.Matches(str);
            Console.WriteLine("一共" + ms.Count + "组");
            foreach (Match item in ms)
            {
                Console.WriteLine(item.Groups["wdq"]);
                Console.WriteLine(item.Value);
                Console.WriteLine("------------------");
            }
            Console.ReadKey();
        }