using System;
using System.Text.RegularExpressions;
public class Example
{
public static void Main()
{
string pattern = @"(1 ){0,}(\d |\d\d )\2{1,}(1 ){0,}\2{1,}(1 ){0,}";
string input = @"3 1 1 4 4 4 4 1 4 4 5 5 1 5 5 6 7 8 1 9 9 9 9 9 9 1 3 4 5 5 1 1 5 5 6 4 4 4 1 7 1 2 2 2 2 2 2 2 1 11 11 11 11 ";
RegexOptions options = 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