6 kyu
Regex for a decimal number divisible by 4
387 of 422kolichj
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Regular Expressions
Puzzles
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This kata is a subject to deduplication process here: https://github.com/codewars/content-issues/issues/228.
Please join the discussion to help us identify duplicate kata and retire them.
Very nice kata of the series to learn more about regular expressions.
Potential duplicate of Mod4 Regex
Python, possibly other languages: tests miss sanity checks on values returned by user solution and crash badly when an unexpected value (not a pattern, or not a valid pattern) is returned.
How is it kyu6? I'm unable to get my regex to 50 chars
How is it a proof it is not 6kyu?
I was able to complete a 1ku (and the others as well) for number divisible by n in less time than this. I'm still unable to complete this one and I have no idea what am I missing.
I completed katas in all kyus and I'm still unable to solve some 7/6kyu, but I don't draw any conclusion from that relative to the kata's ranking. You are (or I am) unable to solve it just means you are (or I am) unable to solve it. Maybe you are (I am) just bad in some areas.
The limit of 50 characters is way too restrictive if the purpose is just to prevent hardcoding. Either lower it down or change the description to "to make it more challenging"
Ruby 3.0 should be enabled, read this to learn how to do it
Please organize the structure of test fixture as following (although it has been mentioned in the attached link, I'm repeated here again)
Enabled in this fork
Can u check please the test case for -20, it is divisible by 4 (-5), my regex fails only there, since it's expecting False.
Ruby translation kumited -- please check and approve.
Great! Approved!
Thanks
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Multiline test cases are unnecessary, i think. The point of kata is to find a way to detect divisibility. It's not about fancy format checking...
Then it should be specified that there are no
\nand no non-ASCII characters or that it's always a number or something like that, otherwise it's not clear what it shouldn't match.Added this line to the description:
I suggest to add a (few) fixed cases where there is a 2-digit number inside which is divisible by 4, but the full number is not. e.g.:
1243 --> FalseOh, and you could fit into 50 chars a regex that doesn't allow leading zeros, too ;-)
Done