Mega Code Archive
Reverse
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using System;
using System.Text;
using System.Text.RegularExpressions;
public class MainClass
{
static void Main( string[] args ) {
// Create regex to search for IP address pattern.
string pattern = @"(?<part1>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"(?<part2>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"(?<part3>[01]?\d\d?|2[0-4]\d|25[0-5])\." +
@"(?<part4>[01]?\d\d?|2[0-4]\d|25[0-5])";
Regex regex = new Regex( pattern );
Match match = regex.Match( "192.168.123.1" );
string replace = @"${part4}.${part3}.${part2}.${part1}" +
@" (the reverse of $&)";
Console.WriteLine( regex.Replace("192.168.123.1", replace) );
}
}
1.123.168.192 (the reverse of 192.168.123.1)
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