You are right. I should be read information about digital root. Take my apologize.
So. Or we need some exception for negative(minus) numbers or specife task. For example: "return -9 for non natural numbers".
This comment is hidden because it contains spoiler information about the solution
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You are right. I should be read information about digital root.
Take my apologize.
So.
Or we need some exception for negative(minus) numbers or specife task. For example: "return -9 for non natural numbers".
This comment is hidden because it contains spoiler information about the solution
This comment is hidden because it contains spoiler information about the solution