apply-transform-over-each-element-in-array.js

/*

2635. Apply Transform Over Each Element in Array

Given an integer array arr and a mapping function fn, return a new array with a transformation applied to each element.

The returned array should be created such that returnedArray[i] = fn(arr[i], i).

Please solve it without the built-in Array.map method.

*/

var map = function(arr, fn) {
  const ra = [];
    for (let i =0;i<arr.length;i++)
        ra.push(fn(arr[i],i));
    
    return ra;
};