storage account for less of the total for large number of levels the savings in the number of copies approach factor of three another way to visualize trickle-up and trickle-down processes being carried out with copies is to think of "hole"--the absence of node--moving down in trickle up and up in trickle down for examplein figure bcopying to temp creates "holeat the "holeactually consists of the earlier copy of node that will be movedit' still there but it' irrelevant copying to moves the "holefrom to bin the opposite direction from the node step by step the "holetrickles downward the heap workshop applet the heap workshop applet demonstrates the operations we discussed in the preceding sectionit allows you to insert new items into heap and remove the largest item in additionyou can change the priority of given item when you start up the heap workshop appletyou'll see display similar to figure figure the heap workshop applet there are four buttonsfillchngremand insfor fillchangeremoveand insert let' see how they work the fill button the heap contains nodes when the applet is first started using the fill buttonyou can create new heap with any number of nodes from to press fill repeatedlyand type in the desired number when prompted