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Came here to say the same.

It does not seem to be a kata issue, I was able to solve it without problems.
You either have some error and fall into some infinite loop, or your solution is probably too slow, especially for long strings, and you'd have to think of some better approach.

You can post your solution here (see here how) and we can take a look.

Closing as not a kata issue, I will re-raise it if necessary.

C++ keeps timing out with different solutions. The problem seems to be a word with over 2000 'a' characters.

In julia many random tests are wrong. For example: add(-5284214779925522942, -5478334000412401012) --> 7684195293371627662.
And the same for many others.

1.- What if there are no duplicates? What should we return?
2.- Also, if there is more than one duplicate, which to return?
3.- Perhaps including 'True'/'False' values i the array could make this kata more challenging.

Hi hobovsky, my solutions do pass all tests and attempts but I can not submit unless I deal with the warning; at least the page does not allows me to submit.

Fixed the source of the warning.

It's not an error, it's a compilation warning. It should not be there, but it also does not cause your solution to fail. If you cannot pass tests, you have another problem somewhere else.

Working with C++. Regardless of what solution I submit (I tried at leats 4 different ones) I always get the error:

main.cpp:78:30: warning: comparison of integers of different signs: 'int' and 'std::vector::size_type' (aka 'unsigned long') [-Wsign-compare] for(int i = 1; i < numbers.size(); i++).

Even if I just return 0 I still get that error. Can somebody give me some guidence on what's going on?

Thanks a lot in advance.

Thanks! I just cuold not see any other error.

test.timeout decorator eats any exceptions raised in the code giving a useless error message instead.

Until the issue is fixed, it'd be a good idea to refrain from using it.

Not an issue. Your solution raises an IndexError.