using System;
using System.Collections.Generic;
using System.IO;
using System.Linq;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
var s = "3 45 123\r 456\n 434554645\r\n 000";
var pattern = @"\d+(?![\r\n\d])";
var results = Regex.Matches(s, pattern)
.Cast<Match>()
.Select(m => m.Value);
Console.WriteLine("Result: {0}", string.Join(", ", results));
}
}
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