To ensure that the largest element of the priority queue is always the first element of the queue, we can implement priority queues as ____.

A. piles
B. stacks
C. trees
D. heaps


Answer: D

Computer Science & Information Technology

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A service is a program that runs in the foreground and is visible on the taskbar.

Answer the following statement true (T) or false (F)

Computer Science & Information Technology

(Enhancing Class Rectangle) Create a more sophisticated Rectangle class than the one you created in Exercise 9.20. This class stores only the Cartesian coordinates of the four corners of the rectangle. The constructor calls a set function that accepts four sets of coordinates and verifies that each of these is in the first quadrant with no single x- or y-coordinate larger than 20.0. The set

func- tion also verifies that the supplied coordinates do, in fact, specify a rectangle. Provide member func- tions that calculate the length, width, perimeter and area. The length is the larger of the two dimensions. Include a predicate function square that determines whether the rectangle is a square. What will be an ideal response?

Computer Science & Information Technology

After typing a paragraph using the Emphasis style, you press Enter to continue, but the new paragraph will not retain the Emphasis style. This result happens because:

A) the Emphasis style cannot be used on two consecutive paragraphs. B) each style has a following paragraph style. C) styles need to be reapplied for every new paragraph. D) the Enter key is also the shortcut key for Clear Formatting.

Computer Science & Information Technology

Commands on each tab of the Ribbon are divided into collections of related commands called ________

A) key combinations B) snips C) Libraries D) groups

Computer Science & Information Technology