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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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prime is not a negative number
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原本以为是很难的题目……没想到仔细读题后发现好简单,两分钟就做出来了!!
明早起床后继续做编程题呀!