f for everyone who is wasteing his time with this kata xd

Well that was a complete waste of my time....XD

Could you post your code (with a spoiler tag)?

dumb....-_-

Use the spoiler flag dammit.

Yea no test n<100 so dumb :D

so troll

It takes me 5 minutes to solve. There is so complex description that solution must be very simple. First try and kata has solved.

But isn't the check performed at the start of the expression? Array length will always be greater than or equal to zero. If the value of n is negative then the function returns -1 in this solution.

Edit:
Okay, I'm dumb :D

@vasyl.shevchuk.78 yes you are right. It would be better to test for it. But the Kata description was a bit vague about the possible values of n and since that case is never tested so I assumed n >= 0 always.

Read about "?" operator in java.

Me either, tried diffrent approach - works in Ide, throws runtime error here.

It is indeed. But as you said: excersise.