Was stucked with the "" aswell :\

I tried a solution with the incriment ++ operator (and no addition + operator) but it was rejected for using a +. So, apparently ++ isn't allowed either.

Mine is pretty my identical. The "" case is rediculous

Thank you! :)

My favorite answer to this kata! This is elegent, and efficient. I'm having a "why didn't I think of this" moment.

I am getting the distinct impression people just don't want to read the description and prefer to reverse engineer examples.

Thank you for your suggestion, and I'm not taking it.

If anybody has specific suggestions how to make the description text clearer, I'll be happy to hear them. Please keep in mind the description is meant to be actually read, and spelling out the solution is not my favourite way of having a clear description.

It would be helpful to have more samples, especially input consisting of arrays of different sizes.

So, essentially for each iteration the n becomes the resultant m of the last iteration?

Agreed, I have no clue what is being asked. Also... What does n represent? What does m represent? Does integral mean anti-derivative or a number that is an integer?

expected input is not a string... as an int, "0222" would be 222, which returns proper result.

This is my favorite solution!