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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.
There's an error in your code. Recreate this test case locally and see how it fails:
assertEquals("0.0.0.0", Kata.longToIP(0));Use markdown formatting
I tried both, Java 8 and Java 11. If you think your solution is OK and tests are incorrect, you can post your solution here (with spoiler flag!) and we will check it.
There is a problem with String index out of range: when you solve the problem, in Java. There is no problem with String index out of range: when I solve the problem, in Java.