• expected and actual are swapped in random test case assertions.
• The solution function should have been static
• Reference solution can give wrong results on integer overflow (i.e. when dragons > Integer.MAX_VALUE / 2)
• Please always show inputs for 8kyu kata.
• As hobovsky said please use JUnit 5

Fixed everything btw.

The translation should use JUnit 5 instead of JUnit 4.

Approved

Then this kata should be reranked...

Yeah, most PU (beta testers) don't realize that basic loop tasks are actually ranked seven.

Knowing how to avoid the loop here involves far more knowledge (even if "basic") than writting the very same for loop we were talking about. So how would that be 7 kyu only???

There is a differnce between a coding performance constraint and a basic mathematical transformation. I won't say very basic, but really quite basic.

I voted 7, and I think coding performance constraints start at 5, not 6 ( 6 is for algorithmic complexity ).

but 7 is not appropriate with perf constraint...

Majority of votes were split between 6 and 7 kyu, which seems appropriate for this task.

The kata requires better than O(n) ( O(sqrt n), O(log n), O(1) ). You can't count up to 1e9 in time, let alone up to 1e18.

It's not up to the kata author to decide on the rank! Beta solvers vote on that. ( And they knew the performance it required when they voted. )

What is your solution's OBig?

I do not agree with you. In english, space char is the word's separator. An anagram is a WORD that can be mixed to create another. So, in 'E h llo' there are 3 differents words.
If you consider 'E h llo' as string, and not as a word, spaces are part of this string.

To me, if this issue is not specified in the instructions, your exemple should return false by default.

Just an opinion

thenks :)

Thanks for the comment. Firstly I started to count this '-'.

@B10nicle, To eliminate these kinds of assumptions I have specifically mentioned about Y's & F's index and their differences. This should give an idea that, the solution is based on this.

And regarding the explanation not being too great, I believe I have provided enough examples and rules.