[Haskell-cafe] Re: inserting values in a binary tree

[Achim Schneider]

PR Stanley <prstanley at ntlworld.com> wrote:

> Hi
> data Ord a => Tree a = Nil | Node (Tree a) a (Tree a)
> How would one go about inserting a value in a binary search tree of 
> the above description?
> 
Using a library ;)

Inserting isn't the problem, balancing is where things get interesting:
have a look at

http://en.wikipedia.org/wiki/AVL_tree

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