Yes, it is, because the "photo" has to match the corresponding animal in correct order, reversed or not.

StringBuffer is slower, so if you don't need synchroniszation/parallelism, you should prefer StringBuilder.

Wow! I'm very sorry:-( My bad: a "this->" forgotten. Hope everything correct now.

Typo fixed, could you try again?

Good solution!

The data for "Submit" tests is much longer and there is an Elizabeth Corder. I am afraid there is an error in your program. Be sure that the tests work properly:-)

yes for example if you had a function like this

myFunction(a, b, ...c) {
  return (a + b) * c.length;
}
myFunction(1, 2, 3, 4, 5) // 9

This is because a = 1, b = 2 but the rest of the arguments are concatenated into an array so c = [3, 4, 5].
since the return statement is (a + b) * c.length it basically stands for (1 + 2) * 3 hence the answer as 9.
Hope this makes sence, good luck

Done :)

Yes, please add falsey values to the description. I will add a zero the the test case now.

Checking the original code, I would assume that all falsey values are like null.

I would also add that to the description, if the author is ok with it.

Sorry, I do not understand what you mean. Which solutions are the problem.

Do you really think that "samurai" ends with "ra" ?