A problem with your code is not a kata issue, read this: https://docs.codewars.com/training/troubleshooting

Actual output encoding and formatting should be specified.

This can be discerned from example tests, but solvers should not be forced to enter a trainer for that.

i rewrote the reference solution (in both tests suite and solution panel); it should be fixed

Didn't even know this was a thing. Here I am doing while loops like some kind of pleb haha

• Ruby 3.0 should be enabled (Refer this & this for more detail)

Wondering how exactly this is Object Oriented?

I'm looking for some pointers on making this more efficient. It's failing due to it taking too long to execute the 5500+ tests that this Kata runs.

function transposeTwoStrings(arr) {
var twoStrings = '';
var string1 = arr[0];
var string2 = arr[1];
var longestString = arr.sort(function(a, b) {
return b.length - a.length;
})[0].length;

for (i = 0; i < longestString; i++) {
twoStrings += (string1[i] || ' ') + ' ' + (string2[i] || ' ') + '\n';
}
return twoStrings.slice(0, -1);
}

In any case, this isn't the kata's problem so it's not an issue.

Internal solution for the random test cases is flawed: it throws Cannot read property 'length' of undefined if both arguments are empty strings (which happens about once in 625 times).

My solution passed in 325 ms. I think you concatenate string inefficiently.

Can we please look at reducing the amount of test cases for the final? I can't pass the test because it's taking too long to complete.

I've got over 3000 random strings generated for the final tests. It goes beyond the 12000ms allowed by Kata and it's failing.