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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.
It feels like this kata doesn't fit c++ language with utf-8 encoding requiremnt.
the japanese charcaters test doesn't make any sense.
alphabet: アイウエオァィゥェォカキクケコサシスセソタチツッテトナニヌネノハヒフヘホマミムメモヤャユュヨョラリルレロワヲンー
key: カタカナ
str: カタカナ
expected to equal 㢃㢃㢃㣃
the C++ starer termplate code "std::string abc" needs to be replaced with "std::string alphabet;"