Let user order posts by meta key

I am using the code below to order my posts by the amount of views it has.

<?php $args = array(
'meta_key' => 'views',
'orderby' => 'meta_value_num',
'order' => 'DESC',
); ?>

<?php query_posts($args); ?>

By changing the meta_key to ‘_likes’ I can order posts by the amount of likes it has.

I want the user to be able to choose between views and likes with a simple drop down menu or buttons.

I’ve searched and searched for a way to do this but cant find any solutions!