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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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I can't pass the first ten tests in C, it suggests Test Crashed. Therefore I unlock others' solution and get all test cases. My code passed all tests. It's not the first time I can't pass a kata in C since Test Crashed. I guess there are some bugs in the test codes.
You are right, there is something wrong with htmlize. My code can pass all the random test. If I use htmlize, however, it will crashes.
I stuck in the 11th should_work_for_a_single_glider_over_all_4_repeating_generations as well.