Java factorial recursion explained Notice how the recursive Java factorial function does not need an iterative loop. Instead, the code repeatedly calls itself until a stop condition is met. In this ...

Recursion has more expressive power than iterative looping constructs. I say this because a while loop is equivalent to a tail recursive function and recursive functions need not be tail recursive.

In this article, we study some new characterizations of primitive recursive functions based on restricted forms of primitive recursion, improving the pioneering work of R. M. Robinson and M. D.