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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.
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Because it equals 2 * 2.
The instructions did not indicate how to handle null values or empty strings, or if we could assume non-null values are given. I had to assume that given nulls and empty strings I should return false. However, technically, I suppose an empty string could be considered a degenerate palindrome.