hmm, i don't knew. Thanks for your tips

thanks!

so me ;)

Okay, thanks. I'll keep that in mind next time. I didn't think Irevealed

hi, think about the spoiler flag, plz (comments under solutions are visible from the dashboard)

else is not necessary here, i++ is enough)

Hi,
Thanks for the feedback. What do you mean by control the time?

There is a solution that will not time out. I'll make a note on the description. Thanks for the feedback.

should note that:
1.return -1 if n<1
2.control the time

I'm new here and met some problems with this kata. It always shows(and I did throw Exception):
Expected exception: java.lang.Exception