Deck 10: Arrays

Question 1

The first variable in a one-dimensional array is assigned a subscript of ____.

A) -1
B) 0
C) 0.1
D) 1

Answer 1

B

Question 2

Storing data in an array decreases the efficiency of a program.

Answer 2

False

Question 3

Assigning initial values to an array is often referred to as ____ the array.

A) setting
B) filling
C) populating
D) initializing

Answer 3

C

Question 4

When declaring an array, you use either the ____ keyword.

A) ByVal, ByRef, ByNum
B) Array, As, Data
C) For, Array, Store
D) Dim, Private, or Static

Question 5

The following Visual Basic statement declares a ____ array. Dim cities(3) As String

A) three-element procedure-level
B) four-element procedure-level
C) three-element class-level
D) four-element class-level

Question 6

When you group together related variables, the group is referred to as a(n) ____.

A) constant
B) simple variable
C) scalar variable
D) array

Question 7

If you create a numeric array without initializing the elements of the array, the computer automatically initializes each element to ____.

A) Empty
B) Nothing
C) 0
D) 1

Question 8

The ____ method returns an integer that represents the highest subscript in the specified dimension in the array.

A) GetLowerBound
B) GetUpperBound
C) UpperBound
D) LowerBound

Question 9

Rather than having the computer use a default value to initialize each array element, you can specify each element's initial value when the array is declared.

Question 10

To ____ an array means to look at each array element, one by one, beginning with the first element and ending with the last element.

A) index
B) traverse
C) collapse
D) validate

Question 11

An array's ____ property tells you the number of elements in the array.

A) Elements
B) Size
C) Dimension
D) Length

Question 12

After an array is declared, you can use another statement to store a different value in an array element.

Question 13

Before you can use an array, you first must declare it.

Question 14

A simple variable is also called a(n) ____ variable.

A) scalar
B) array
C) dynamic
D) dimensional

Question 15

The ____ of a variable indicates the variable's position in the array.

A) subscript
B) name
C) dimension
D) column

Question 16

Each of the variables in an array can have a different data type.

Question 17

When some of the variables in a program are related to each other, it is easier and more efficient to treat the related variables as a(n) ____.

A) block
B) array
C) group
D) record

Question 18

The following Visual Basic statement declares and initializes a ____ array. Private states() As String = {"Hawaii", "Alaska", "Maine"}

A) zero-element class-level
B) three-element class-level
C) zero-element procedure-level
D) three-element procedure-level

Question 19

If the array's data type is String , each element in the array is initialized using the keyword ____.

A) Empty
B) Nothing
C) NoData
D) NoString

Question 20

If you create a Boolean array without initializing the elements of the array, the computer automatically initializes each element to ____.

A) True
B) Nothing
C) 0
D) False

Question 21

Write the code to assign the strings " Madrid ", " Paris ", " Rome ", and " London " to the first, second, third and fourth variables, respectively, contained in the first row of a two-dimensional array named cities .

Question 22

How do you sort the elements of a one-dimensional array in descending order?

Question 23

Write the statement to assign the string " Virginia " to the second element in a one-dimensional array named states .

Question 24

How do you refer to a variable in an array?

Question 25

You use the ____ method to sort the elements in a one-dimensional array in ascending order.

A) Array.Sort
B) Array.Order
C) Array.Ascending
D) Array.SmallToLarge

Question 26

Each element in a two-dimensional array is identified by ____ subscript(s).

A) one
B) two
C) three
D) four

Question 27

How do you sort the elements in a one-dimensional array in ascending order?

Question 28

How is each variable in a two-dimensional array identified?

Question 29

You can use the ____________________ statement to code a loop whose instructions you want processed for each element in a group.

Question 30

Write the statement to declare a six-row, four-column array of strings named cities .

Question 31

The ____ method sorts the elements in a one-dimensional array in descending order.

A) Array.Sort
B) Array.Order
C) Array.Reverse
D) Array.Descending

Question 32

Variables initialized to the ____________________ keyword contain no data at all.

Question 33

A variable declared in the For Each clause of the For Each...Next statement has ____ scope.

A) block
B) procedure
C) module
D) interface

Question 34

Explain how and why using an array in a program affects the efficiency of the program.

Question 35

Arrays whose elements are used to add together values are called ____________________ arrays.

Question 36

You use the ____________________ property to determine the number of elements stored in an array.

Question 37

You can visualize a one-dimensional array as a ____.

A) single variable
B) column of variables
C) table of variables
D) cube of variables

Question 38

A ____ is used to separate the row subscript from the column subscript in a two-dimensional array.

A) semicolon (;)
B) colon (:)
C) period (.)
D) comma (,)

Question 39

Programmers often associate the values in an array with a collection of items in a(n) ____________________.

Question 40

What is the difference between a one-dimensional array and a two-dimensional array?

Question 42

How do you traverse a two-dimensional array?