FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 8: Arrays

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

True/False

Review LaterAdd Note

Review Later

Although methods may be declared with a variable length parameter list, class constructors cannot.

A) True
B) False

Correct Answer

verified

Show Answer

Question 2

Multiple Choice

Review LaterAdd Note

Review Later

An int array stores the following values. Use the array to answer the questions below. -How many passes will it take in all for Selection Sort to sort this array?

A) 2
B) 4
C) 5
D) 6
E) 7

F) C) and D)
G) A) and C)

Correct Answer

verified

Show Answer

Question 3

Multiple Choice

Review LaterAdd Note

If x is a char, and values is an int array, then values[x]

For the questions below, assume values is an int array that is currently filled to capacity, with the following values: -The statement System.out.println(values[7]) ; will

Demonstrate how the following array is sorted using Insertion Sort. Show the array after each pass of the outer loop. [16, 3, 12, 13, 8, 1, 18, 9]

An int array stores the following values. Use the array to answer the questions below. -Which of the following lists of numbers would accurately show the array after the first pass through the Selection Sort algorithm?

The Key Events include

Say that you want to construct a tiny drawing program, where the objects are defined using line segments. One might use the rubber-banding ideas presented in this chapter to define the endpoints of line segments, hooking them together into a polyline. One might provide a button that turns a polyline into a polygon. If this approach is taken, what would be a good way to represent the data involved in this program: the points, the line segments, the polylines, the polygons?

Assume that BankAccount is a predefined class and that the declaration BankAccount[ ] firstEmpireBank; has already been performed. Then the following instruction reserves memory space for firstEmpireBank = new BankAccount[1000];

The class Name consists of 4 instance data, String title, String first, String middle, String last. The class has a constructor that is passed all 4 String values and initializes the class appropriately, and has 4 methods, each returns one of the four instance data, called returnTitle( ), returnFirst( ), returnMiddle( ) and returnLast( ). Name[ ] addressBook = new Name[100]; is performed. Write a method that is passed 4 String parameters corresponding to a Name's title, first, middle, and last, and finds this Name in addressBook and returns the index of where this Name was found, or -1 if the Name was not found. Assume that addressBook stores n entries (n is an int).

So long as one is only accessing the elements of an ArrayList, its efficiency is about the same as that of an array. It's only when one begins to insert or remove elements towards the front portion of an ArrayList that its efficiency deteriorates.

A Polygon object in Java is

Arrays have a built in toString method that returns all of the elements in the array as one String with "\n" inserted between each element.

Write code to create a JPanel with 4 JCheckBox GUI components and two JLabels for output, one that says "Current cost is" and the other that outputs the computed cost based on which of the food items has been selected.

Given the following declarations, which of the following variables are arrays? Int[ ] a, b; Int c, d[ ];

In Java, an array can only store one type of data. For instance, you cannot create an array that stores both double and String values.

As described in the Software Failure, a race condition bug in a computer program is one in which

If the following statement is performed: CD[ ] mycollection = new CD[200]; where CD is a previously defined class, then mycollection[5] is a CD object.

For the questions below, assume values is an int array that is currently filled to capacity, with the following values: -Which of the following loops would adequately add 1 to each element stored in values?

Demonstrate how the following array is sorted using Selection Sort. Show the array after each pass of the outer loop. [16, 3, 12, 13, 8, 1, 18, 9]