recursion

Right now the tutorial is coherently designed, tested, and even documented. However, it doesn't build up in a way that's very beginner friendly. It establishes glom's value and then immediately uses it at an intermediate level.

I'd like it if it was a bit more drawn out to use basic features first and then add a multi-line Coalesce as the

The mentioned file needs to be re-written. There is no concept of overflow in Circular Queue as it wraps up. What I mean is:
Test Driver Code:
public static void main(String[] agrs) {
CircularQueue q = new CircularQueue(5);
q.insert(10);
q.insert(20);
q.insert(30);
q.insert(40);
q