日期:2014-05-18 浏览次数:21000 次
  string tempStr = File.ReadAllText(@"C:\Documents and Settings\Administrator\桌面\Test.txt", Encoding.GetEncoding("GB2312"));//读取tx
                string pattern = @"(?i)(?<=\d+ +)(\d+\s+){3}";
                string[] ss = Regex.Matches(tempStr, pattern).Cast<Match>().Select(a => a.Value).Distinct().ToArray();
                /*
                 *                    [0]    "12 3 17 "    string
                                [1]    "12 3 18 "    string
                                [2]    "12 10 19 "    string
                                [3]    "02 3 18 "    string
                                [4]    "02 12 18 "    string
                 */