Deck 6: Arrays

Question 1

An array is a(n)____ of values in computer memory.

A)list
B)accumulation
C)set
D)record

Answer 1

A

Question 2

An array can be used to replace ____.

A)records
B)methods
C)nested decisions
D)loops

Answer 2

C

Question 3

You use subscripts 1 through 10 to access the elements in a ten element array.

Answer 3

False

Question 4

The number of elements in an array is called the ____ of the array.

A)width
B)size
C)height
D)depth

Question 5

Many newer programming languages such as C++, Java, and C# use subscript 1 to access the first element of the array.

Question 6

A(n)____ is another name for a subscript.

A)pointer
B)sequence
C)index
D)place holder

Question 7

You can improve the efficiency of a program by leaving a loop as soon as a match is found in the array.

Question 8

Providing array values is sometimes called ____.

A)creating the array
B)declaring the array
C)accumulating the array
D)populating the array

Question 9

All array elements have the same group ____.

A)subscript
B)name
C)memory location
D)value

Question 10

Suppose that you have declared a numeric array named numbers, and two of its elements are numbers[1] and numbers[5]. You know that ____.

A)numbers[1] is smaller than numbers[5]
B)there are exactly four elements between those two elements
C)numbers[5] is the last element in the array
D)there are exactly three elements between those two elements

Question 11

A parallel array is an array that stores another array in each element.

Question 12

Arrays cannot be used if you need to search for a range of values.

Question 13

When you have a five element array and use subscript 6, your subscript is said to be out of bounds.

Question 14

In all languages, subscript values must be sequential ____.

A)characters
B)fractions
C)real numbers
D)integers

Question 15

A program contains an array that holds all the names of the days of the week. Which of the following is true?

A)The highest subscript is 6.
B)The highest subscript is 7.
C)The lowest subscript is 1.
D)The highest subscript is 12.

Question 16

Parallel arrays must contain the same data type.

Question 17

Declaring a named constant makes code easier to modify and understand.

Question 18

Array elements all have the same ____ in common.

A)pointer
B)memory location
C)value
D)data type

Question 19

The for loop is a good tool when working with arrays because you frequently need to process every element of an array from beginning to end.

Question 20

Many newer programming languages such as C++, Java, and C# use the square bracket notation for arrays.

Question 21

To search an array for a(n)____ match, you can store either the highest or lowest value of each range for comparison.

A)flag
B)index
C)subscript
D)range

Question 22

A ____ search starts looking in the middle of a sorted list, and then determines whether it should continue higher or lower.

A)linear
B)binary
C)quadratic
D)divided

Question 23

A subscript, also called a(n)____________________, is a number that indicates the position of a particular item within an array.

Question 24

The number of bytes in an array is always a multiple of the number of ____ in an array.

A)subscripts
B)elements
C)iterators
D)indexes

Question 25

Parallel arrays are most useful when value pairs have a(n)____ relationship.

A)direct
B)indirect
C)linked
D)tiered

Question 26

Which statement is true of arrays?

A)Only whole numbers can be used as array subscripts.
B)Only whole numbers can be stored in arrays.
C)Arrays cause more work for the programmer, but allow faster program execution.
D)Array elements cannot be reset after the array is declared.

Question 27

The true benefit of using an array lies in your ability to use a ____ as a subscript to the array.

A)constant
B)loop
C)command
D)variable

Question 28

In every programming language, when you access data stored in an array, you must use a ____ containing a value that accesses memory occupied by the array.

A)superscript
B)subscript
C)key
D)condition

Question 29

When you search through a list from one end to the other, you are performing a ____.

A)linear search
B)binary search
C)quadratic search
D)single lookup

Question 30

When working with arrays, you can use ____________________ in several ways: To hold the size of an array, as the array values, and as a subscript .

Question 31

A(n)____________________ is a variable set to indicate whether some event has occurred.

Question 32

One advantage to using a named constant is that the statement becomes ____.

A)self-perpetuating
B)self-documenting
C)self-referencing
D)self-mitigating

Question 33

Use a(n)____________________ to indicate the position of a particular item within an array.

Question 34

If you declare a variable to be Boolean, you can set its value to ____.

A)any number
B)true or false
C)any integer
D)1 or -1

Question 35

Every array has a(n)____ size.

A)infinite
B)finite
C)variable
D)constant

Question 36

Besides making your code easier to modify, using a ____ makes the code easier to understand.

A)standard constant
B)named constant
C)literal constant
D)named variable

Question 37

Named ____ hold values that do not change during a program's execution.

A)constants
B)variables
C)objects
D)items

Question 38

A ____ relates parallel arrays.

A)superscript
B)key
C)subscript
D)postscript

Question 39

When a subscript is not within the range of acceptable subscripts, it is said to be ____.

A)a superscript
B)flagged
C)out of bounds
D)indexed

Question 40

All array elements have the same ____________________ name, but each individual element also has a unique subscript indicating how far away it is from the first element.

Question 41

Consider a mail-order business in which customers get a discount based on the quantity they order. In writing a program to compute the discount based on a customer's order quantity, why is it not a good idea to construct an array with as many elements as a customer might want to order, and store the appropriate discount associated with each number?

Question 42

How do you reference the elements in an array?

Question 43

What happens when a beginning programmer forgets that array subscripts start with 0?

Question 46

Describe an array and provide an example of a real-life equivalent to an array.

Question 47

Why is it important to learn to use arrays properly?

Question 48

What is an advantage of using an array to match a value in a range of values?

Question 49

How can constants be used when working with arrays?

Question 51

What happens if a subscript value is negative or higher than the highest allowed subscript?

Question 52

What are the steps to verify that an item number exists in an array? Provide an example.

Question 60

Why is it desirable to leave the loop as soon as a match is found?