Duplicate issue (see Unnamed post, 7 months ago).

A trailing space requires a new empty "word"/string, but there isn't a word there, so why would you need to parse it?

The kata description assures neither x nor n can be zero :)
You can declare i inside the for loop header.

I'm not particularly keen on this solution. A multiplication is much more readable, and will probably get optimized to this result anyway.