Hi,

Can anyone explain to me why this works in hardcoded:

```
function largestOfFour(arr) {
var results = [];
var largest = Math.max(...arr[0]);
results.push(largest);
var largest = Math.max(...arr[1]);
results.push(largest);
var largest = Math.max(...arr[2]);
results.push(largest);
var largest = Math.max(...arr[3]);
results.push(largest);
return results;
}
largestOfFour([[4, 5, 1, 3], [13, 27, 18, 26], [32, 35, 37, 39], [1000, 1001, 857, 1]]);
```

but it will not work if I out it through a loop? Because, the above cleared the challenge, but it was only to test if my theory was true, that it should work.

This is the code that does not work:

```
function largestOfFour(arr) {
for(var i = 0; i > arr.length; i++){
var largest = Math.max(...arr[i]);
results.push(largest);
}
return results;
}
```

I know there a lot of more elegant solutions than mine, I checked the hint section. But I can not for the life of me get why this won’t work….