
Understanding Arrays in Programming
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Other
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University
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Practice Problem
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Hard
MIE Society
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is an array in programming?
A function that performs calculations on numbers
An array is a data structure that holds a collection of elements, typically of the same type, accessible by index.
A type of variable that can hold only one value
A method for sorting data in a list
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you declare an array in JavaScript?
let myArray = [];
var myArray = new Array();
let myArray = () => {};
const myArray = {};
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the difference between a one-dimensional and a multi-dimensional array?
A one-dimensional array can only store numbers, while a multi-dimensional array can store any data type.
A one-dimensional array has a single index for access, while a multi-dimensional array uses multiple indices.
A one-dimensional array is always larger than a multi-dimensional array.
A one-dimensional array can only be used in programming languages, while a multi-dimensional array can be used in spreadsheets.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How can you access the first element of an array?
Use array[0] to access the first element of an array.
Use array.get(0) to access the first element of an array.
Use array.first() to access the first element of an array.
Use array[1] to access the first element of an array.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What method would you use to add an element to the end of an array in Python?
Use the append() method.
Use the extend() method.
Use the add() method.
Use the insert() method.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Explain how to iterate over an array using a for loop.
for (i = 0; i < array.length; i++) { print(array[i]); }
for (let i in array) { console.log(array[i]); }
for (let i = 1; i <= array.length; i++) { console.log(array[i]); }
for (let i = 0; i < array.length; i++) { console.log(array[i]); }
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the 'length' property in an array?
The 'length' property is used to sort the elements in an array.
The 'length' property defines the maximum size of an array.
The 'length' property stores the last element of the array.
The 'length' property indicates the number of elements in an array.
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