[Haskell-cafe] I need help on AVL trees

Can someone advise me how can I build an AVL tree becouse I have difficulties with the rotations. Since if I add a node I want to be abel to check whether the tree is balanced or not if balanced ok but if not I need to do one of the 4 rotations which is a problem for me and I want to be able to give the nodes from the keyboard. What I mean is that it is possible to build the tree from scratch. Thanks to all! -- View this message in context: http://www.nabble.com/I-need-help-on-AVL-trees-tf3657386.html#a10218190 Sent from the Haskell - Haskell-Cafe mailing list archive at Nabble.com.