EdaxFlattenArray.js

/**

Example Code for developer position application

Write some code, that will flatten an array of arbitrarily nested arrays of integers into a flat array of integers. e.g. [[1,2,[3]],4] -> [1,2,3,4].

For this code I'll use JS (es6) running in NodeJS v11

Instructions:

0. Download the file
1. Open the Terminal
2. run -> node EdaxFlattenArray.js

**/

// declare the array that we need to flatten
const array = [[1, 2, [3]], 4];

// function in charge to flatten the array
const flatten = array => array.toString().split(',').map(item => !isNaN(parseInt(item)) ? parseInt(item) : item);

// log the result of the flatten array
console.log(flatten(array));