Strange case. Do you still need a solution? Which language you train?

The tests are fine (in Python anyway). 600+ people would agree with me.

A bit of humility usually proves useful when you suspect something might be wrong, "lol". In any case, your feedback would at least be semi-constructive if you stated what language you were using and which test input/output gave the wrong results.

couldn't have said it better myself

couldn't have said it better myself

couldn't have said it better myself

Yes, reworded description.

What language version are you trying to solve? I guess it's C or C++, right? If it is indeed C or C++, your process probably crashed and it's not easy to exactly tell why. You can share your code (remember abour spoiler flag!) and we will take a look.

The error is: Cannot read property 'toUpperCase' of undefined and it's your code's fault. You're trying to access the 0 position of an empty string and use toUpperCase with it. Next time, mark your post as having spoiler content please. You can see the input your code is failing because it's the third sample test.

JavaScript Completions 4253

Are you sure it's not your fault? What's the error? You're probably not using String.prototype or using it wrong.