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This article mainly introduces the relevant knowledge of how to realize grouping construction in C#. The content is detailed and easy to understand, the operation is simple and fast, and it has a certain reference value. I believe you will gain something after reading this article on how to realize grouping construction in C#. Let's take a look.

Example

Using System

Using System.Text.RegularExpressions

Public class Example

{

Public static void Main ()

{

String input = "1851 1999 1950 1905 2003"

String pattern = @ "(?

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