CodeIgniter Custom Router help

Am very new to CI, So I want to know that one feature listed below will be done via CI Router, then How开发者_如何学C?

Feature:

Q1. I need to show my users profile in such a way that mysite.com/johhn mysite.com/raju.radha mysite.com/johhn1.

Q2. Other Urls are mysite.com/photo/3434, mysite.com/album/3443 etc etc.

I know this can be achieved by using $route . for the Q2 this is the solution

$route['photo/:num'] = "photo/photo_list";
$route['album/:num'] = "album/album_list";

and what is the solution for Q1??

Thanks in advance !!!

Route:

$route['(:any)'] = "profile/view/$1";

Controller:

class Profile extends CI_Controller {
    function view($username) {
        echo $username;
    }
}

Edit: Commenter made the great point that this will need to be the last route directive in the file to prevent it from overriding all of the other routing rules.