Simple question. Not familiar with putting queues in ArrayLists. So I'm supposed to create an Array List of ten items. Each item in the array list is a reference to a queue of integers, called a "bucket" queue.
Then I have to process a random sequence of 500 integers each with a value between 000 and 999 by
placing each integer in the bucket queue that corresponds to the integer's units digit. So how do I get started with putting the queues inside the ArrayList items? Also if I get a number like 500, I have to put in the 500th slot of the queue? How would that work?

Question

Simple question. Not familiar with putting queues in ArrayLists. So I'm supposed to create an Array List of ten items.  Each item in the array list is a reference to a queue of integers, called a "bucket" queue. 
Then I have to process a random sequence of 500 integers each with a value between 000 and 999 by 
placing each integer in the bucket queue that corresponds to the integer's units digit. So how do I get started with putting the queues inside the ArrayList items? Also if I get a number like 500, I have to put in the 500th slot of the queue? How would that work?