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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.
That's why I said it could be 7kyu:
7 Kyu
7 kyu kata represent a beginner programming level. At this level the kata will generally challenge users on their core language and API reference knowledge. Tasks such as:
Iterating arrays and returning a subset of values
Basic data type manipulations
Basic functional or object-oriented concepts
Basic Regular Expressions
But katas won't be reranked anytime soon, so...
You can read more about kyu rankings (and what they currently mean) here
Have you solved any 1kyu kata? They're much MUCH harder than this one, the only difficulty in this one is knowing the formula and making a few units conversion. Could be ranked 7kyu, but no more than that.
This comment is hidden because it contains spoiler information about the solution
the answer of first question should be a digital string such as
"1234"This comment is hidden because it contains spoiler information about the solution