ikr, gives me headache

i dont understand why people voting but its very unreadable and not clever solution

ninja

Why not?

This Array(index+1) creates some undefined elements and the number of the undefind elements depends on what is passed as an arguement to the Array(), which in this case is index + 1, and the .join(x.toLowerCase()) fills up the undefined elements with x lower cased.

I hope this makes sense too.

PS: This is not a good practice because of the undefined elements that is created.

Thanks.

Excactly. This comment should be permanently added into this solution.

can somebody explain it a bit more expand why we are creating a new array here and how is it useful thanks alot!