 Remember to use <a>**`Read-Search-Ask`**</a> if you get stuck. Try to pair program  and write your own code 
###  Problem Explanation:
This problem seems simple but you need to make sure to flatten any array, regardless of the level which is what adds a bit of difficulty to the problem.
If you are dealing with an array, then you need flatten it by getting the value inside of the array. This means if you have `[[4]]` then instead of returning `[4]` you need to return `4`. If you get `[[[4]]]` then the same, you want the `4`. You can access it with `arr[index1][index2]` to go a level deeper.
You will definitely need recursion or another way to go beyond two level arrays to make the code flexible and not hard-coded to the answers needed. Have fun!
* Create a function that will add non array elements to the new variable, and for the ones that are array it loops through them to get the element.
* It does that by using recursion, if the element is an array then call the function again with a layer of array deeper to check if it is an array or not. if it is not then push that non-array element to the variable that gets returned. Otherwise, keep going deeper.
* Invoke the function, the first time you will always pass it an array, so it always fall in to the isArray branch
* First we turn the array to a string, which will give us a string of numbers seperated by a comma, double comma if there was an empty array and literal object text if there was an object, which we can fix it later in our if statement.
* We replace the double comma with one, then split it back into an array.
* map through the array and fix object values and convert string numbers to regular numbers.
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