I've got an assignment for my second programming class. This is the first time I've been introduced to the idea of recursion, and I'm having trouble finding a start. This will be done in Java, but if some one could point me in the right direction with the algorithm, I can handle that part just fine. The problem asks that I write a program that takes an integer argument (non negative) and return the sum of the digits that make up the number. It must be done recursively. Any help is appreciated.