steps to reproduce

Write a loop, from 1 to 80000, each time add a random int to the max heap.

In theory it takes very little time(NlogN, N=80000, <1sec ), but the program does take a long time.

I'v also tested the BinaryHeap in https://github.com/SolutionsDesign/Algorithmia, it performs well, so it is probably due to the bad algorithm.

The migration guide here should be expanded with additional content regarding upgrading from Observable to ZStream.

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