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.
Most probably it's a problem with your code:
The only way to know for sure is for you to paste your code using markdown formatting here and mark your post as having spoiler content.
Java version has problem.
I have tested my code in IDEA and it works perfectly, but I have different output, then I'm doing sample tests here.