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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.
Restrictions
Code length <= 77 characters
This issue is a duplicate too. Closing, no need to open another one.
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It's the other way around. 1321 doesn't contain a palindrome, but 1215 does.
Read this, please: https://docs.codewars.com/training/troubleshooting/#print-input and debug your code.