Loading collection data...
Collections are a way for you to organize kata so that you can create your own training routines. Every collection you create is public and automatically sharable with other warriors. After you have added a few kata to a collection you and others can train on the kata contained within the collection.
Get started now by creating a new collection.
Print it to console, for example:
System.out.println(Arrays.toString(a));
If the array is empty, it won't show up then (there's test with 2 empty arrays that you could be failing).
No need to post your code.
Print the input arrays.
This comment is hidden because it contains spoiler information about the solution