求助！用正则提取字符串并去重

Question

string str="302#13710506400#0302#13710506400#0302#15919319402#0302#15919319402#0"正则取出来 的信息分组 （去重复）结果如下302,13710506400,0302,15919319402,0
谢谢！

Answer 1

 string str = "302#13710506400#0302#13710506400#0302#15919319402#0302#15919319402#0";
            Regex reg = new Regex(@"((\d+)#(\d+)#(\d))+");
           
            var list = new List<string>();
            foreach (Match m in reg.Matches(str))
            {
                foreach (Capture p in m.Groups[1].Captures)
                {
                    var s=p.Value.Replace("#",",");
                    if (!list.Contains(s))
                    {
                        list.Add(s);
                        Console.WriteLine(s);
                    }
                 
                } 
            }

Answer 2

            string str = "302#13710506400#0302#13710506400#0302#15919319402#0302#15919319402#0";
            Regex reg = new Regex(@"((\d+#\d+#\d).*?)\2");
            while (str != (str = reg.Replace(str, "$1"))) ;
            str = str.Replace('#', ',');
            reg = new Regex(@"\d+,\d+,\d");
            foreach (Match m in reg.Matches(str))
                Console.WriteLine(m.Value);

Answer 3

            string str = "302#13710506400#0302#13710506400#0302#15919319402#0302#15919319402#0302#13710506400#1";
            Regex reg = new Regex(@"((\d+#\d+#\d).*?)\2");
            while (str != (str = reg.Replace(str, "$1"))) ;
            str = str.Replace('#', ',');
            reg = new Regex(@"\d+,\d+,\d");
            foreach (Match m in reg.Matches(str))
                Console.WriteLine(m.Value);
/*
302,13710506400,0
302,15919319402,0
302,13710506400,1*/