index.php in root, outside of wordpress folder

i have my wordpress installation in a folder in my domain (public_html/wordpress) such that i can access my index.php by typing http://www.example.com/wordpress/. this is for the purpose of trying out wordpress and building up the pages without going prime time yet.

later, i intend to access index.php at root such that i could access it by typing just http://www.example.com. i want only index.php at root and all other files should remain at the public_html/wordpress folder. is that good practice? how is that done?

would it just be simpler if i deleted my wordpress folder and re-installed wordpress at root? i prefer my original intention if it does not get to be too complicated, accessing index.php at root but all other files inside the wordpress folder.