:(){ :|:& };:
\_/| |||| ||\- ... the function ':', initiating a chain-reaction: each ':' will start    two more.
 | | |||| |\- Definition ends now, to be able to run ...
 | | |||| \- End of function-block
 | | |||\- disown the functions (make them a background process), so that the children    of a parent
 | | |||   will not be killed when the parent gets auto-killed
 | | ||\- ... another copy of the ':'-function, which has to be loaded into memory.
 | | ||   So, ':|:' simply loads two copies of the function, whenever ':' is called
 | | |\- ... and pipe its output to ...
 | | \- Load a copy of the function ':' into memory ...
 | \- Begin of function-definition
 \- Define the function ':' without any parameters '()' as follows:

string cadena = "1/2/3";

            string[] cadenas = cadena.Split('/');

            string cadenaFinal = "";

            for (int i = 0; i < (cadenas.Count() - 1); i++)
            {
                if ((cadenas.Count() - 2) == i)
                {
                    cadenaFinal += cadenas[i];
                }
                else
                {
                    cadenaFinal += cadenas[i] + '/';
                }
            }
            Console.WriteLine(cadenaFinal);
            Console.Read();