njonjiop The regex should imho start with ^ and end with a $, however this is not accepted. This seems contradictory in comparison with the previous question where it was required.
tonghe I used ^ and $ just as last question required. And it was wrong. The test cases are not consistent. Really confusing.
sarathy_v_krish1 Yes, I think that's because the boilerplate code in the previous problem used re.match (which maps the pattern to the word exactly), but this uses re.search(which only checks is the pattern matches a substring of the word)
menafgul testcase#4 for javascript is this "10a10.2015452254" and expects "true". this should be fixed.
k_pawlowski I had the same problem. Solution was not to use ^$ as it was needed in the previous one example...
dicky_dicky yes, test case 4 is broken :(
pratik9044536615 Yup for the last part check for atleast 4 digits i.e. minimum 4 and max can be any
191997mahesh if use ^ and $ then it will restrict to 4 digits, so the case goes wrong, without them the case will pass
quixrick Yeah, I used the ^, but could not use the $ as it would fail. If it said that it could be an arbitrary number of digits, instead of xxXxxXxxxx, then it would have made more sense.
ganjash ya, this should be fixed. It should false.
minatocool20119 (\d{2}\D){2}\d{4} because "a" and "." are character xxXxxXxxxx
ShubhamDeshkar NOTHING IS BROKEN :P \d{2}\D\d{2}\D\d{4} this is the answer for Java 8
vishalisakar27 this sloves all test cases "\d{2}\D\d{2}\D(\d{4,10} "
haloerika Why limit it to 10? You can just
\d{4,}
vishal_chitnis It's easier to group digits like \d{2} rather than \d\d
Nandhinime Any thoughts on why \d+ does not work
jasperoostdam \d+ means one or more digits, while you need to match exactly 2, 2 and 4 digits respectively here. \d{2} means: match exactly 2 digits. This notation makes your regex more readable than \d\d in my opinion.
britojr This is annoying: I got WA on previous challenge because I didn't use ^ and $ for begin and end of the expression.
But in this one I got WA because I used those.
So, it's never clear if the expression should or shouldn't accept strings that have something exra after the match
simonjanes Serious question: Why are there even "hidden test cases" that need to be unlocked by spending "Hackos?"
In "real world" programming, if a test case fails, it shows you why it failed so that you can understand the problem.
Is this merely a case of gamification run amok? Would you tolerate a unit testing suite that held back your failing test results for a small amount ransom paid in Bitcoin?
mkhanw01 (\d{2}\D){2}\d{4}
haloerika This worked for me.
^\d{2}\D\d{2}\D\d{4,}$- Matches 2 digits
- Matches a non-digit
- Matches 2 digits
- Matches a non-digit
- Matches 4 digits or more
zhanyu_wang It's confusing when in the problem "Matching Anything But a Newline" we have to use "^" and "$" but now we should not.
zhangyan8806 This is one of ways by using Java. tester.checker("(?:\d{2}\D){2}\d{4}");
animesh2712 Can you please add explanation?
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