Question 1

In row processing, a two-dimensional array is processed one row at a time.

Accepted Answer

A) True 
 B)False

Question 2

When an array object is instantiated, its components are initialized to their default values.

Accepted Answer

A) True 
 B)False

Question 3

Which of the following declares an array of int named beta?

Accepted Answer

A)  int beta; 
B)  int[] beta; 
C)  new int beta[]; 
D)  int beta = int[]; 
A)  int beta; 
B)  int[] beta; 
C)  new int beta[]; 
D)  int beta = int[];

Question 4

char[][] table = new char[10][5];How many columns are in the array seen in the accompanying figure?

Accepted Answer

A)  0 
B)  5 
C)  10 
D)  15 
A)  0 
B)  5 
C)  10 
D)  15

Question 5

Which limitation of arrays does a vector overcome?

Accepted Answer

A)  Arrays cannot increase in size; vectors can. 
B)  Arrays cannot be passed as parameters to methods; vectors can. 
C)  Arrays cannot be searched; vectors can. 
D)  There is a method that returns the length of a vector; there is no way to find the length of an array. 
A)  Arrays cannot increase in size; vectors can. 
B)  Arrays cannot be passed as parameters to methods; vectors can. 
C)  Arrays cannot be searched; vectors can. 
D)  There is a method that returns the length of a vector; there is no way to find the length of an array.

Question 6

int[] numList = new int[50];for (int i = 0; i <50; i++)
NumList[i] = 2 * i;
Num[10] = -20;
Num[30] = 8;
How many components are in the array numList seen in the accompanying figure?

Accepted Answer

A)  0 
B)  30 
C)  49 
D)  50 
A)  0 
B)  30 
C)  49 
D)  50

Question 7

Only one-dimensional arrays can be passed as parameters.

Accepted Answer

A) True 
 B)False

Question 8

The array index can be any nonnegative integer less than the array size.

Accepted Answer

A) True 
 B)False

Question 9

Suppose that you have the following declaration.int[] alpha = new int[50];
int[][] beta = new int[10][5];In this declaration, the array alpha has more components than the array beta.

Accepted Answer

A) True 
 B)False

Question 10

char[][] table = new char[10][5];How many dimensions are in the array seen in the accompanying figure?

Accepted Answer

A)  1 
B)  2 
C)  5 
D)  10 
A)  1 
B)  2 
C)  5 
D)  10

Question 11

Suppose you have the following declaration.double[] salesData = new double[500];Which of the following range is valid for the index of the array salesData.
(i) 0 through 500
(ii) 0 through 499

Accepted Answer

A)  Only (i) 
B)  Only (ii) 
C)  Both are invalid 
D)  None of these 
A)  Only (i) 
B)  Only (ii) 
C)  Both are invalid 
D)  None of these

Question 12

Only a fixed number of elements can be stored in a vector.

Accepted Answer

A) True 
 B)False

Question 13

char[][] table = new char[10][5];What is the value of table.length?

Accepted Answer

A)  0 
B)  5 
C)  10 
D)  15 
A)  0 
B)  5 
C)  10 
D)  15

Question 14

Given the declaration int[] list = new int[50];the statementSystem.out.println(list[0] + "..." + list[49]);outputs all 50 components of the array list.

Accepted Answer

A) True 
 B)False

Question 15

The method size in the class Vector returns the number of elements in the vector.

Accepted Answer

A) True 
 B)False

Question 16

The following statement creates alpha to be a two-dimensional array of 35 components. int[][] alpha = new int[20][15];

Accepted Answer

A) True 
 B)False

Question 17

int[] list = {1, 3, 5, 7};(int i = 0; i  5)
System.out.println(i + " " + list[i]);Which indices are in bounds for the array list, given the declaration in the accompanying figure?

Accepted Answer

A)  0, 1, 2, 3 
B)  1, 2, 3, 4 
C)  1, 3, 5, 7 
D)  0, 1, 3, 5 
A)  0, 1, 2, 3 
B)  1, 2, 3, 4 
C)  1, 3, 5, 7 
D)  0, 1, 3, 5

Question 18

A single array can hold components of many different data types.

Accepted Answer

A) True 
 B)False

Question 19

If an array index is less than or equal to zero, an InvalidIndexException exception is thrown.

Accepted Answer

A) True 
 B)False

Question 20

Vectors can be used to implement lists.

Accepted Answer

A) True 
 B)False

In row processing, a two-dimensional array is processed one row at a time.

When an array object is instantiated, its components are initialized to their default values.

Which of the following declares an array of int named beta?

char[][] table = new char[10][5];How many columns are in the array seen in the accompanying figure?

Which limitation of arrays does a vector overcome?

int[] numList = new int[50];for (int i = 0; i <50; i++) NumList[i] = 2 * i; Num[10] = -20; Num[30] = 8; How many components are in the array numList seen in the accompanying figure?

Only one-dimensional arrays can be passed as parameters.

The array index can be any nonnegative integer less than the array size.

Suppose that you have the following declaration.int[] alpha = new int[50]; int[][] beta = new int[10][5];In this declaration, the array alpha has more components than the array beta.

char[][] table = new char[10][5];How many dimensions are in the array seen in the accompanying figure?

Suppose you have the following declaration.double[] salesData = new double[500];Which of the following range is valid for the index of the array salesData. (i) 0 through 500 (ii) 0 through 499

Only a fixed number of elements can be stored in a vector.

char[][] table = new char[10][5];What is the value of table.length?

Given the declaration int[] list = new int[50];the statementSystem.out.println(list[0] + "..." + list[49]);outputs all 50 components of the array list.

The method size in the class Vector returns the number of elements in the vector.

The following statement creates alpha to be a two-dimensional array of 35 components. int[][] alpha = new int[20][15];

int[] list = {1, 3, 5, 7};(int i = 0; i < list.length; i++) If (list[i] > 5) System.out.println(i + " " + list[i]);Which indices are in bounds for the array list, given the declaration in the accompanying figure?

A single array can hold components of many different data types.

If an array index is less than or equal to zero, an InvalidIndexException exception is thrown.

Vectors can be used to implement lists.

An Overview of Computers and Programming Languages

Basic Elements of Java

Introduction to Objects and Input/output

Control Structures I: Selection

Control Structures II: Repetition

Graphical User Interface GUI and Object-Oriented Design OOD

User-Defined Methods

User-Defined Classes

Inheritance and Polymorphism

Handling Exceptions and Events

Advanced Guis and Graphics

Recursion

Applications of Arrays Searching and Sorting and Strings

Filters

Exam 9: Arrays

In row processing, a two-dimensional array is processed one row at a time.

When an array object is instantiated, its components are initialized to their default values.

Which of the following declares an array of int named beta?

char[][] table = new char[10][5];How many columns are in the array seen in the accompanying figure?

Which limitation of arrays does a vector overcome?

int[] numList = new int[50];for (int i = 0; i <50; i++) NumList[i] = 2 * i; Num[10] = -20; Num[30] = 8; How many components are in the array numList seen in the accompanying figure?

Only one-dimensional arrays can be passed as parameters.

The array index can be any nonnegative integer less than the array size.

Suppose that you have the following declaration.int[] alpha = new int[50]; int[][] beta = new int[10][5];In this declaration, the array alpha has more components than the array beta.

char[][] table = new char[10][5];How many dimensions are in the array seen in the accompanying figure?

Suppose you have the following declaration.double[] salesData = new double[500];Which of the following range is valid for the index of the array salesData. (i) 0 through 500 (ii) 0 through 499

Only a fixed number of elements can be stored in a vector.

char[][] table = new char[10][5];What is the value of table.length?

Given the declaration int[] list = new int[50];the statementSystem.out.println(list[0] + "..." + list[49]);outputs all 50 components of the array list.

The method size in the class Vector returns the number of elements in the vector.

The following statement creates alpha to be a two-dimensional array of 35 components. int[][] alpha = new int[20][15];

int[] list = {1, 3, 5, 7};(int i = 0; i < list.length; i++) If (list[i] > 5) System.out.println(i + " " + list[i]);Which indices are in bounds for the array list, given the declaration in the accompanying figure?

A single array can hold components of many different data types.

If an array index is less than or equal to zero, an InvalidIndexException exception is thrown.

Vectors can be used to implement lists.

An Overview of Computers and Programming Languages

Basic Elements of Java

Introduction to Objects and Input/output

Control Structures I: Selection

Control Structures II: Repetition

Graphical User Interface GUI and Object-Oriented Design OOD

User-Defined Methods

User-Defined Classes

Inheritance and Polymorphism

Handling Exceptions and Events

Advanced Guis and Graphics

Recursion

Applications of Arrays Searching and Sorting and Strings

Filters