安科网
源代码：
using System; using System.Text.RegularExpressions; public class Example { public static void Main() { string input = "1851 1999 1950 1905 2003"; string pattern = @"(?<=19)\d{2}\b"; foreach (Match match in Regex.Matches(input, pattern)) Console.WriteLine(match.Value); } }
运行结果
<html><head></head><body>99<br>50<br>05<br></body></html>
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