stacks and queues know that the front of the queue is always at the top of the array at nitems- and they insert items in ordernot at the rear figure shows the operation of the priorityq class methods front front rear rear new item inserted in priority queue front rear front rear front rear two items removed from front of priority queue figure operation of the priorityq class methods the peek and new buttons you can peek at the minimum item (find its value without removing itwith the peek buttonand you can create newemptypriority queue with the new button other implementation possibilities the implementation shown in the priorityq workshop applet isn' very efficient for insertionwhich involves moving an average of half the items another approachwhich also uses an arraymakes no attempt to keep the items in sorted order new items are simply inserted at the top of the array this makes