Data Structure
Networking
RDBMS
Operating System
Java
MS Excel
iOS
HTML
CSS
Android
Python
C Programming
C++
C#
MongoDB
MySQL
Javascript
PHP
Physics
Chemistry
Biology
Mathematics
English
Economics
Psychology
Social Studies
Fashion Studies
Legal Studies
- Selected Reading
- UPSC IAS Exams Notes
- Developer's Best Practices
- Questions and Answers
- Effective Resume Writing
- HR Interview Questions
- Computer Glossary
- Who is Who
Append the current array with the squares of corresponding elements of the array in JavaScript
We have an array of Numbers like this −
const arr = [12, 19, 5, 7, 9, 11, 21, 4];
We have to write a function that takes in such an array and returns a new array with all the items of the original array appended by the squares of corresponding elements of the array.
For this sample array, the output should be −
[12, 19, 5, 7, 9, 11, 21, 4, 144, 361, 25, 49, 81, 121, 441, 16]
Example
const arr = [12, 19, 5, 7, 9, 11, 21, 4];
const multiplyArray = (arr) => {
return arr.reduce((acc, val) => {
return acc.concat(val * val);
}, arr);
};
console.log(multiplyArray(arr));Output
The output in the console will be −
[ 12, 19, 5, 7, 9, 11, 21, 4, 144, 361, 25, 49, 81, 121, 441, 16 ]
Updated on: 21-Aug-2020
62 Views
Advertisements