Here’s the assessment, my code and a live example.
Any advice is always welcome. 
Here’s the assessment, my code and a live example.
Any advice is always welcome. 
Tasks 1,2 and 4 are correct. 
In task 3 you are not saving the new elements back into the array and the join character is wrong. 
Have a nice day,
Michael
Thank you @mikoMK!! I’ve already updated my code. 
Great improvements, @salvadorperezm! Now it’s perfect. 