I can't comment on why the model gave you that code, but I can tell you why it was not correct.
`queue.remove(0)` gives you an `int[]`, which is also what you were assigning to `current`. So logically it's a single element, not an iterable. If you had wanted to iterate over each item in the array, it would need to be:
```
for (int[] current : queue) {
for (int c : current) {
// ...do stuff...
}
}
```
Alternatively, if you wanted to iterate over each element in the queue and treat the int array as a single element, the revised solution is the correct one.
`queue.remove(0)` gives you an `int[]`, which is also what you were assigning to `current`. So logically it's a single element, not an iterable. If you had wanted to iterate over each item in the array, it would need to be:
``` for (int[] current : queue) { for (int c : current) { // ...do stuff... } } ```
Alternatively, if you wanted to iterate over each element in the queue and treat the int array as a single element, the revised solution is the correct one.