Question 1

An array is a(n)____ of values in computer memory.
A)list
B)accumulation
C)set
D)record

Accepted Answer

An array is a data structure that stores a collection of elements of the same type in contiguous memory locations. It can be thought of as a list of values, where each element can be accessed by its index or position within the array. Therefore, "list" is the best choice for the blank.

Question 2

An array can be used to replace ____.
A)records
B)methods
C)nested decisions
D)loops

Accepted Answer

C

Question 3

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

Accepted Answer

The subscripts to access elements in an array start from 0 to n-1, where n is the number of elements in the array. Therefore, to access the elements in a ten element array, subscripts 0 through 9 should be used.

Question 4

The number of elements in an array is called the ____ of the array.
A)width
B)size
C)height
D)depth

Accepted Answer

The term commonly used to refer to the number of elements in an array is "size". Therefore, choice B is the best answer. "Width", "height", and "depth" are terms typically used to refer to the dimensions of a three-dimensional object, and are not commonly used when referring to arrays.

Question 5

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

Accepted Answer

In C++, Java, and C#, arrays are zero-indexed, meaning the first element is accessed with subscript 0, not 1.

Question 6

A(n)____ is another name for a subscript.
A)pointer
B)sequence
C)index
D)place holder

Accepted Answer

An index is another name for a subscript, which is a way of indicating the position of an element in an array or a sequence. A pointer is a variable that stores the memory address of another variable or object, a sequence is a collection of elements that are ordered in a particular way, and a placeholder is a symbol or character that serves as a temporary substitute for some other value or expression.

Question 7

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

Accepted Answer

When a match is found in the array, there is no need to continue looping through the rest of the array. This can significantly improve the efficiency of the program.

Question 8

Providing array values is sometimes called ____.
A)creating the array
B)declaring the array
C)accumulating the array
D)populating the array

Accepted Answer

Populating the array means to fill it with values, which is what the question is asking for. Creating the array and declaring the array are steps that come before populating, and accumulating the array refers to adding or removing values from the array over time.

Question 9

All array elements have the same group ____.
A)subscript
B)name
C)memory location
D)value

Accepted Answer

All array elements share the same name, which is used in conjunction with a unique subscript to access each individual element.

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

Accepted Answer

We know that there are two elements named numbers[1] and numbers[5] which means that there are 5 elements in the array. Therefore, if there are exactly three elements between those two elements, then the array would look like this: numbers[1], ?, ?, ?, numbers[5], which would make a total of 5 elements. This means option D is correct, and we cannot infer whether option A or C is correct based on the given information. Option B is incorrect as there are actually 4 indices (2, 3, 4, 5) between the elements numbers[1] and numbers[5].

Question 11

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

Accepted Answer

A parallel array is an array that stores a corresponding element of another array at the same index. It does not store another array in each element.

Question 12

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

Accepted Answer

Arrays can be used to search for a range of values by iterating through the array and checking if each element falls within the desired range.

Question 13

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

Accepted Answer

A five element array will have subscripts ranging from 0 to 4. Using subscript 6 is beyond the bounds of the array.

Question 14

In all languages, subscript values must be sequential ____.
A)characters
B)fractions
C)real numbers
D)integers

Accepted Answer

Subscript values must be in whole numbers, which are 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.

Accepted Answer

In most programming languages, arrays are zero-indexed, meaning the first element is at index 0. For an array holding the seven days of the week, the indices would range from 0 to 6, making the highest subscript 6.

Question 16

Parallel arrays must contain the same data type.

Accepted Answer

Parallel arrays can contain different data types, as they are separate arrays that are used together, typically indexed in the same manner to represent related information.

Question 17

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

Accepted Answer

Declaring named constants allows for easier maintenance of code because the value only needs to be changed in one place, and it also makes the purpose of the value more clear to other programmers.

Question 18

Array elements all have the same ____ in common.
A)pointer
B)memory location
C)value
D)data type

Accepted Answer

All elements in an array have the same data type, whether it be integer, float, character, etc. This is because arrays are a collection of similar data types. Options A and B are not true for all arrays since arrays can be initialized in different memory locations, and each element can have its own pointer. Option C is also not true because elements in an array can have different values.

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.

Accepted Answer

The for loop is commonly used in array processing because it allows for easy iteration through every element in the array, making it a helpful tool for this task.

Question 20

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

Accepted Answer

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

Quiz 6: Arrays

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

An array can be used to replace ____.

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

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

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

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

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

Providing array values is sometimes called ____.

All array elements have the same group ____.

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

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

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

In all languages, subscript values must be sequential ____.

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

Parallel arrays must contain the same data type.

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

Array elements all have the same ____ in common.

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.

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