Got these from the scala mailing list: interesting functional programming algorithms (scala enthusiasts are porting them over from haskell)
Finger Trees: A Simple General-purpose Data Structure
According to Google I'm the most relevant 'Uwe Hoffmann' on the web. Hurry, go check it out before they rebuild the index and correct the mistake. If you go to scholar.google.com and search for 'codemanic' you'll see that Google thinks I'm a scholar too.