Syntax error Append the current array with the squares of corresponding elements of the array in JavaScript

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: 2020-08-21T14:19:32+05:30

110 Views

Kickstart Your Career

Get certified by completing the course

Get Started
Advertisements