using System;
using System.Text.RegularExpressions;
public class Test
{
public static void Main()
{
string str = "Harry Potter And The Deathly Hallows Part 2 2011";
string result = Regex.Replace(str, @"(\b\d{4}\b)", "($1)");
Console.WriteLine(result);
}
}
dXNpbmcgU3lzdGVtOwp1c2luZyBTeXN0ZW0uVGV4dC5SZWd1bGFyRXhwcmVzc2lvbnM7CgpwdWJsaWMgY2xhc3MgVGVzdAp7CglwdWJsaWMgc3RhdGljIHZvaWQgTWFpbigpCgl7CgkJc3RyaW5nIHN0ciA9ICJIYXJyeSBQb3R0ZXIgQW5kIFRoZSBEZWF0aGx5IEhhbGxvd3MgUGFydCAyIDIwMTEiOwoJCXN0cmluZyByZXN1bHQgPSBSZWdleC5SZXBsYWNlKHN0ciwgQCIoXGJcZHs0fVxiKSIsICIoJDEpIik7CgkJQ29uc29sZS5Xcml0ZUxpbmUocmVzdWx0KTsKCX0KfQ==