Arrays | Programming Quiz - Quizizz

Arrays

K - University grade

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Computers

50%average accuracy

3 years ago

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10 QuestionsShow answers

Question 1
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30 seconds
Q. Which of the following are good examples of things to store as arrays or lists?
I – A to-do list
II – A grocery list
III – A ball in a game of breakout
IV – A list of balls in a game of breakout
V – A loop counter variable
answer choices
II only
III and V
I, II, and IV
I, II, III, IV, and V
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Question 2
SURVEY
30 seconds
Q.
```
var groceries = ["milk", "sugar", "eggs", "cake"];
```
What is the value of groceries[2] in the above array?
answer choices
"milk"
"sugar"
"eggs"
"cake"
Tags:
Question 3
SURVEY
30 seconds
Q.
```
var shoppingList = ["milk", "eggs", "sugar", "bread", "cake"];
```
What is the index of the item "bread" in the array shoppingList?
answer choices
4
3
5
6
Tags:
Question 4
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30 seconds
Q. What is printed by the following lines of code?
answer choices
eggs
bread
2
sugar
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Question 5
SURVEY
30 seconds
Q. It is possible to have an array with 0 items.
answer choices
true
false
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Question 6
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30 seconds
Q. What is the output from the following program?
answer choices
undefined
25
20
25
25
undefined
20
20
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Question 7
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30 seconds
Q.
var arr = [1, 4, 55, 23, 11, 2];
What is the value of arr.length?
answer choices
5
6
9
2
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Question 8

30 seconds

Q.

var firstElement = ...

Which statement will store the first element of an array arr inside of the variable firstElement?

answer choices

var firstElement = arr[0];

var firstElement = arr[1];

var firstElement = arr[arr.length];

var firstElement = arr[arr.length - 1];

Question 9

30 seconds

Q.

var lastElement = ...

Which statement will store the last element of an array arr inside of the variable lastElement?

answer choices

var lastElement = arr[0];

var lastElement = arr[1];

var lastElement = arr[arr.length];

var lastElement = arr[arr.length - 1];

Question 10
SURVEY
30 seconds
Q. Describe the output of the following function:
answer choices
starting at the beginning of the array, prints each item in the array
starting at the beginning of the array, prints each index of the array
starting at the end of the array, prints each item in the array
starting at the end of the array, prints each index of the array
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