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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.
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I disagree that this is a 4-kyu kata, if there are other regex katas that require lookahead knowledge that are 5-kyu. This should be downgraded or the harder ones should be upgraded.
Hello, one of the random tests created this:
'k@|1507718HuN6SO!/@02809591400549', and gives as correct answer: 'k@|1507718HuN6SO!/@028095914005410'
Which I suppose is wrong, as the successor should be 'k@|1507718HuN6SO!/@02809591400550'
Am I misunderstanding something?