Java*

What does the following code fragment do? Give a high-level description of what the code fragment does

Queue q = new Queue(); q.enqueue(0); q.enqueue(1); for (int i = 0; i < 10; i++) {

int a = q.dequeue();

int b = q.dequeue();

q.enqueue(b);

q.enqueue(a + b);

System.out.println(a);