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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.
Im new with the programming, just want to now if i understand this correctly, getNumericValue is checking for the first char from the string and return string depending on the number?
若测试用例有2位数字的话，这个答案就不适用了
is not that obsolete since i got similar code, but I failed tests that have 2 digits.