Question 1

When an array is passed to a method __________.

Accepted Answer

A)  it is passed just as any other object would be passed 
B)  the method has direct access to the original array 
C)  a reference to the array is passed 
D)  All of these are true 
A)  it is passed just as any other object would be passed 
B)  the method has direct access to the original array 
C)  a reference to the array is passed 
D)  All of these are true

Question 2

Declaring an array reference variable does not create an array.

Accepted Answer

A) True 
 B)False

Question 3

The __________ indicates the number of elements the array can hold.

Accepted Answer

A)  new operator 
B)  array's size declarator 
C)  array's data type 
D)  version of Java 
A)  new operator 
B)  array's size declarator 
C)  array's data type 
D)  version of Java

Question 4

A search algorithm __________.

Accepted Answer

A)  arranges elements in ascending order 
B)  arranges elements in descending order 
C)  is used to locate a specific item in a collection of data 
D)  is rarely used with arrays 
A)  arranges elements in ascending order 
B)  arranges elements in descending order 
C)  is used to locate a specific item in a collection of data 
D)  is rarely used with arrays

Question 5

Each array in Java has a public field named __________ that contains the number of elements in the array..

Accepted Answer

A)  size 
B)  capacity 
C)  length 
D)  limit 
A)  size 
B)  capacity 
C)  length 
D)  limit

Question 6

If numbers is a two-dimensional int array that has been initialized and total is an int that has been set to 0, which of the following will sum all the elements in the array?

Accepted Answer

A)  for (int row = 1; row < numbers.length; row++)
{
For (int col = 1; col < numbers.length; col++)
Total += numbers[row][col];
} 
B)  for (int row = 0; row < numbers.length; row++)
{
For (int col = 0; col < numbers.length; col++)
Total += numbers[row][col];
} 
C)  for (int row = 0; row < numbers[row].length; row++)
{
For (int col = 0; col < numbers.length; col++)
Total += numbers[row][col];
} 
D)  for (int row = 0; row < numbers.length; row++)
{
For (int col = 0; col < numbers[row].length; col++)
Total += numbers[row][col];
} 
A)  for (int row = 1; row < numbers.length; row++)
{
For (int col = 1; col < numbers.length; col++)
Total += numbers[row][col];
} 
B)  for (int row = 0; row < numbers.length; row++)
{
For (int col = 0; col < numbers.length; col++)
Total += numbers[row][col];
} 
C)  for (int row = 0; row < numbers[row].length; row++)
{
For (int col = 0; col < numbers.length; col++)
Total += numbers[row][col];
} 
D)  for (int row = 0; row < numbers.length; row++)
{
For (int col = 0; col < numbers[row].length; col++)
Total += numbers[row][col];
}

Question 7

A partially filled array is normally used __________.

Accepted Answer

A)  when only a very small number of values need to be stored 
B)  when you know how many elements will be in the array but not what the values are 
C)  with an accompanying parallel array 
D)  with an accompanying integer value that holds the number of items stored in the array 
A)  when only a very small number of values need to be stored 
B)  when you know how many elements will be in the array but not what the values are 
C)  with an accompanying parallel array 
D)  with an accompanying integer value that holds the number of items stored in the array

Question 8

What will be the value of x[8] after the following code is executed?
 final int SUB = 12;
Int[ ] x = new int[SUB];
Int y = 100;
For(int i = 0; i < SUB; i++)
{
X[i] = y;
Y += 10;
}

Accepted Answer

A)  170 
B)  180 
C)  190 
D)  200 
A)  170 
B)  180 
C)  190 
D)  200

Question 9

What will be the results after the following code is executed?
 int[ ] x = { 55, 33, 88, 22, 99, 11, 44, 66, 77 };
Int a = 10;
If(x[2] > x[5])
A = 5;
Else
A = 8;

Accepted Answer

A)  a = 5 
B)  a = 8 
C)  a = 10 
D)  a = 13 
A)  a = 5 
B)  a = 8 
C)  a = 10 
D)  a = 13

Question 10

What will be the results after the following code is executed? 
int[ ] array1 = new int[25];
).. // Code that will put values in array1
Int value = array1[0];
For (int a = 1; a < array1.length; a++)
{
If (array1[a] < value)
Value = array1[a];
}

Accepted Answer

A)  value contains the highest value in array1 
B)  value contains the lowest value in array1 
C)  value contains the sum of all the values in array1 
D)  value contains the average of all the values in array1 
A)  value contains the highest value in array1 
B)  value contains the lowest value in array1 
C)  value contains the sum of all the values in array1 
D)  value contains the average of all the values in array1

Question 11

What will be the result after the following code is executed? 
final int ARRAY_SIZE = 5;
Float[ ] x = float[ARRAY_SIZE];
For (i = 1; i <= ARRAY_SIZE; i++)
{
X[i] = 10.0;
}

Accepted Answer

A)  A runtime error will occur. 
B)  All the values in the array will be initialized to 10.0. 
C)  All the values in the array except the first will be set to 10.0. 
D)  The code contains a syntax error and will not compile. 
A)  A runtime error will occur. 
B)  All the values in the array will be initialized to 10.0. 
C)  All the values in the array except the first will be set to 10.0. 
D)  The code contains a syntax error and will not compile.

Question 12

To determine if two arrays are equal you must compare each of the elements of the two arrays.

Accepted Answer

A) True 
 B)False

Question 13

What would be the result after the following code is executed? 
int[ ] x = {23, 55, 83, 19};
Int[ ] y = {36, 78, 12, 24};
For(int a = 0; a < x.length; a++)
{
X[a] = y[a];
Y[a] = x[a];
}

Accepted Answer

A)  x[] = {36, 78, 12, 24} and y[] = {23, 55, 83, 19} 
B)  x[] = {36, 78, 12, 24} and y[] = {36, 78, 12, 24} 
C)  x[] = {23, 55, 83, 19} and y[] = {23, 55, 83, 19} 
D)  Nothing. This is a compile error. 
A)  x[] = {36, 78, 12, 24} and y[] = {23, 55, 83, 19} 
B)  x[] = {36, 78, 12, 24} and y[] = {36, 78, 12, 24} 
C)  x[] = {23, 55, 83, 19} and y[] = {23, 55, 83, 19} 
D)  Nothing. This is a compile error.

Question 14

The sequential search algorithm __________.

Accepted Answer

A)  returns 1 if the value being searched for is found or -1 if the value is not found 
B)  requires the array to be ascending order 
C)  uses a loop to sequentially step through an array, starting with the first element 
D)  must always be implemented as a method 
A)  returns 1 if the value being searched for is found or -1 if the value is not found 
B)  requires the array to be ascending order 
C)  uses a loop to sequentially step through an array, starting with the first element 
D)  must always be implemented as a method

Question 15

When an individual element of an array is passed to a method __________.

Accepted Answer

A)  a reference to the array is passed 
B)  it is passed like any other variable 
C)  the method does not have access to the original array 
D)  All of these are true. 
A)  a reference to the array is passed 
B)  it is passed like any other variable 
C)  the method does not have access to the original array 
D)  All of these are true.

Question 16

An array can hold multiple values of several different types of data simultaneously.

Accepted Answer

A) True 
 B)False

Question 17

An ArrayList object automatically expands in size to accommodate the items stored in it.

Accepted Answer

A) True 
 B)False

Question 18

What would be the result after the following code is executed? 
final int SIZE = 25;
Int[ ] array1 = new int[SIZE];
).. // Code that will put values in array1
Int value = 0;
For (int a = 0; a < array1.length; a++)
{
Value += array1[a];
}

Accepted Answer

A)  value contains the highest value in array1. 
B)  value contains the lowest value in array1. 
C)  value contains the sum of all the values in array1. 
D)  This code would cause the program to crash. 
A)  value contains the highest value in array1. 
B)  value contains the lowest value in array1. 
C)  value contains the sum of all the values in array1. 
D)  This code would cause the program to crash.

Question 19

A sorting algorithm is a technique for scanning through an array and rearranging its contents in some specific order.

Accepted Answer

A) True 
 B)False

Question 20

What would be the result after the following code is executed?
 int[ ] numbers = {40, 3, 5, 7, 8, 12, 10};
Int value = numbers[0];
For (int i = 1; i < numbers.length; i++)
{
If (numbers[i] < value)
Value = numbers[i];
}

Accepted Answer

A)  The value variable will contain the average of all the values in the numbers array. 
B)  The value variable will contain the sum of all the values in the numbers array. 
C)  The value variable will contain the lowest value in the numbers array. 
D)  The value variable will contain the highest value in the numbers array. 
A)  The value variable will contain the average of all the values in the numbers array. 
B)  The value variable will contain the sum of all the values in the numbers array. 
C)  The value variable will contain the lowest value in the numbers array. 
D)  The value variable will contain the highest value in the numbers array.

When an array is passed to a method __________.

Declaring an array reference variable does not create an array.

The __________ indicates the number of elements the array can hold.

A search algorithm __________.

Each array in Java has a public field named __________ that contains the number of elements in the array..

If numbers is a two-dimensional int array that has been initialized and total is an int that has been set to 0, which of the following will sum all the elements in the array?

A partially filled array is normally used __________.

What will be the value of x[8] after the following code is executed? final int SUB = 12; Int[ ] x = new int[SUB]; Int y = 100; For(int i = 0; i < SUB; i++) { X[i] = y; Y += 10; }

What will be the results after the following code is executed? int[ ] x = { 55, 33, 88, 22, 99, 11, 44, 66, 77 }; Int a = 10; If(x[2] > x[5]) A = 5; Else A = 8;

What will be the results after the following code is executed? int[ ] array1 = new int[25]; ).. // Code that will put values in array1 Int value = array1[0]; For (int a = 1; a < array1.length; a++) { If (array1[a] < value) Value = array1[a]; }

What will be the result after the following code is executed? final int ARRAY_SIZE = 5; Float[ ] x = float[ARRAY_SIZE]; For (i = 1; i <= ARRAY_SIZE; i++) { X[i] = 10.0; }

To determine if two arrays are equal you must compare each of the elements of the two arrays.

What would be the result after the following code is executed? int[ ] x = {23, 55, 83, 19}; Int[ ] y = {36, 78, 12, 24}; For(int a = 0; a < x.length; a++) { X[a] = y[a]; Y[a] = x[a]; }

The sequential search algorithm __________.

When an individual element of an array is passed to a method __________.

An array can hold multiple values of several different types of data simultaneously.

An ArrayList object automatically expands in size to accommodate the items stored in it.

What would be the result after the following code is executed? final int SIZE = 25; Int[ ] array1 = new int[SIZE]; ).. // Code that will put values in array1 Int value = 0; For (int a = 0; a < array1.length; a++) { Value += array1[a]; }

A sorting algorithm is a technique for scanning through an array and rearranging its contents in some specific order.

What would be the result after the following code is executed? int[ ] numbers = {40, 3, 5, 7, 8, 12, 10}; Int value = numbers[0]; For (int i = 1; i < numbers.length; i++) { If (numbers[i] < value) Value = numbers[i]; }

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Classes

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Java-Fx: Gui Programming and Basic Controls

Java-Fx: Advanced Controls

Java-Fx: Graphics, Effects, and Media

Recursion

Databases

Filters

Exam 7: Arrays and the Arraylist Class

When an array is passed to a method __________.

Declaring an array reference variable does not create an array.

The __________ indicates the number of elements the array can hold.

A search algorithm __________.

Each array in Java has a public field named __________ that contains the number of elements in the array..

If numbers is a two-dimensional int array that has been initialized and total is an int that has been set to 0, which of the following will sum all the elements in the array?

A partially filled array is normally used __________.

What will be the value of x[8] after the following code is executed? final int SUB = 12; Int[ ] x = new int[SUB]; Int y = 100; For(int i = 0; i < SUB; i++) { X[i] = y; Y += 10; }

What will be the results after the following code is executed? int[ ] x = { 55, 33, 88, 22, 99, 11, 44, 66, 77 }; Int a = 10; If(x[2] > x[5]) A = 5; Else A = 8;

What will be the results after the following code is executed? int[ ] array1 = new int[25]; ).. // Code that will put values in array1 Int value = array1[0]; For (int a = 1; a < array1.length; a++) { If (array1[a] < value) Value = array1[a]; }

What will be the result after the following code is executed? final int ARRAY_SIZE = 5; Float[ ] x = float[ARRAY_SIZE]; For (i = 1; i <= ARRAY_SIZE; i++) { X[i] = 10.0; }

To determine if two arrays are equal you must compare each of the elements of the two arrays.

What would be the result after the following code is executed? int[ ] x = {23, 55, 83, 19}; Int[ ] y = {36, 78, 12, 24}; For(int a = 0; a < x.length; a++) { X[a] = y[a]; Y[a] = x[a]; }

The sequential search algorithm __________.

When an individual element of an array is passed to a method __________.

An array can hold multiple values of several different types of data simultaneously.

An ArrayList object automatically expands in size to accommodate the items stored in it.

What would be the result after the following code is executed? final int SIZE = 25; Int[ ] array1 = new int[SIZE]; ).. // Code that will put values in array1 Int value = 0; For (int a = 0; a < array1.length; a++) { Value += array1[a]; }

A sorting algorithm is a technique for scanning through an array and rearranging its contents in some specific order.

What would be the result after the following code is executed? int[ ] numbers = {40, 3, 5, 7, 8, 12, 10}; Int value = numbers[0]; For (int i = 1; i < numbers.length; i++) { If (numbers[i] < value) Value = numbers[i]; }

Introduction to Computers and Java

Java Fundamentals

Decision Structures

Loops and Files

Methods

A First Look at Classes

A Second Look at Classes and Objects

Text Processing and More About Wrapper Classes

Inheritance

Exceptions and Advanced File Io

Java-Fx: Gui Programming and Basic Controls

Java-Fx: Advanced Controls

Java-Fx: Graphics, Effects, and Media

Recursion

Databases

Filters