4. Make one pass through the input data and enqueue each number into the queue whose number matches the last digit of the number in the array. I used the modulus operator (\%) to get the individual digits from the numbers. For example, n%10 gives the last digit, (n/10)%10 the second, etc. 5. After all numbers are processed make the original ArrayList empty. Use the clear( method to do this. 6. Dequeue all numbers from the queues and add to the empty ArrayList one-by-one starting with queue \#0. Each queue should be empty before you go to the next one. I used a while loop with "Iqueue.isEmpty()" as the condition