I know... :P

o.O ok^^

The variable minmax should be declared after the for loop since the min and max will not be modified if the variable is before the for loop.

Actually some mathematical textbooks write the power set of set A as 2^A. If one is familiar with the notion, one writes the answer within one second (if time for typing is not considered).

This kata is a nice selector.

Thanks the author ;-)

You've just solved the kata. Look at the solution staring you in the face.

I get the following error:

testStupidlyLargeArrays(PowersTest)
expected:<2147483647> but was:<1267650600228229401496703205376>

very good english lol..

not really readable but short.

Haha that was my thought to :D

Haha :D

That's basically the gist of it, yeah. It's clean, easily understandable and not verbose - but not the most efficient solution.

It's half-way clever for its brevity, but definitely not best practice due to inefficiency.

Don't post code! What is your problem?