Regex Match Pattern number range?

Question

I'm trying to go threw a large string  and match a patterns like

1,6,25,26,33,45,65  or  3,20,31,46,55,66,73  I got this close to work but it grabs extra charters

  string file = strd.ReadToEnd();
                strd.Close();
                strd.Dispose();

string pattern = @",?\d+,\d+,\d+,\d+,\d+,\d+,\d+\s*";

string Data2 = Regex.Replace(file, @"\s", "");
                foreach (Match m in Regex.Matches(Data2, pattern, RegexOptions.Singleline))
                {
                    string t = m.ToString();
                    if ("," != t.Substring(0, 1))
                    {
                        NewList.Add(t);

                    }

                }

I would rather use the range method [1-73], [1-73] ...etc , but I don't know how to set it up?

Any Ideas... Thanks

Answer 1

In order to detect a sequence of seven numbers, try a combination of Regular Expressions and other techniques:

string Data2 = ".... 1,6,25,26,33,45,65 ....";
string pattern = @"((\d+)\s*,\s*){6}(\d+)";

foreach( Match m in Regex.Matches( Data2, pattern, RegexOptions.Singleline ) )
{
    var found = m.Groups[0].Value;
    string[] numbers = found.Split( ',' ).Select(n=>n.Trim()).ToArray();

    // add numbers to list. . .
}

If you want to only detect values between 1 and 73, then:

string pattern = @"(?<!\d)((7[0-3]|[1-6][0-9]|[1-9])\s*,\s*){6}(7[0-3]|[1-6][0-9]|[1-9])(?!\d)";

Answer 2

I'm trying to learn this my self so can you break down:

string pattern = @"((\d+)\s*,\s*){6}(\d+)... like what does {6} mean?

string pattern = @"(?<!\d)((7[0-3]|[1-6][0-9]|[1-9])\s*,\s*){6}(7[0-3]|[1-6][0-9]|[1-9])(?!\d)

... like what does ((7[0-3]|[1-6][0-9]|[1-9])\s* mean?

Thanks

Answer 3

Thanks