Computer Science AQA A level: Program how an item is removed from a circular queue

Question

Program how an item is removed from a circular queue

Will Parker · Accepted Answer

if (!Empty())
            {
                string r = QueueArray[front];
                QueueArray[front] = "";
                front = (front + 1) % capacity;
                count--;
                return r;
            }
            else
            {
                throw new InvalidOperationException("Invalid operation. The queue is empty.");
            }

Removing at item removes the first item. You don’t search for it

Computer Science AQA A level

Program how an item is removed from a circular queue

If (!Empty()) { string r = QueueArray[front]; QueueArray[front] = ""; front = (front + 1) % capacity; count--; return r; } else { throw new InvalidOperationException("Invalid operation. The queue is empty."); } Removing at item removes the first item. You don’t search for it

Author