using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"^(?:
[0369] |
(?:
[147]
(?:[147][0369]*[258]|[0369])*
[258]
) |
(?:
[258]
(?:[258][0369]*[147]|[0369])*
[147]
)
)+$";
string input = @"0
3
6
9
12
15
18
21
99
102
534
999
998
2
4
101
17
19
";
RegexOptions options = RegexOptions.IgnorePatternWhitespace | RegexOptions.Multiline;
foreach (Match m in Regex.Matches(input, pattern, options))
{
Console.WriteLine("'{0}' found at index {1}.", m.Value, m.Index);
}
}
}
Please keep in mind that these code samples are automatically generated and are not guaranteed to work. If you find any syntax errors, feel free to submit a bug report. For a full regex reference for C#, please visit: https://msdn.microsoft.com/en-us/library/system.text.regularexpressions.regex(v=vs.110).aspx