See the updated content in the link and the code in here http://www.chaoxuprime.com/posts/2013-08-16-more-algorithms-on-perfectly-balanced-photo-gallery.html ht

See the updated content in the link and the code in here http://www.chaoxuprime.com/posts/2013-08-16-more-algorithms-on-perfectly-balanced-photo-gallery.html http://www.chaoxuprime.com/posts/2013-08-16-more-algorithms-... Both in Haskell. you can see how to implement it from scratch...