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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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method name removNb seemed unnecessary, any reason you didn't name it something clearer like removeNumbers?
Thank you for this, didn't understand the requirement until I read this!
The wording of the kata is a little off, I'd suggest getting a native English speaker to proofread it
I think they forget to write code for others to read. If
m
jogs their short term memory that's good enough apparentlyFor the inclusiveness and self-awareness (and professionalism), this kata should specify that the phone number format being used is the North American Numbering Plan https://en.wikipedia.org/wiki/North_American_Numbering_Plan
I'd say they're head and last.
The naming is quite poor for this kata. DRoot as a classname is a pointless abreivation which sacrifices clarity for no gain as DigitalRoot is an acceptable class name. digital_root as a method name is worse because it bucks the Java convention of using lower camel-case for method names. Otherwise it was good and fun to solve!
why are
h
andl
used as variable names? do they stand for something?