This is the purpose of the algorithm:

Flatten a nested array. You must account for varying levels of nesting.

Right now my solution works, but I want it to be more efficient.

For example. Right now it is limited to the amount of depth I have put in my code.

How can I check how many arrays there are inside of each of the arrays without writing so much repetitive code?

Any ideas will be much appreciated!

Thanks.

**Your code so far**

```
function steamrollArray(arr) {
let newArr = [];
for(let i = 0; i < arr.length; i++){
if(Array.isArray(arr[i])){
for(let j = 0; j < arr[i].length; j++){
if(Array.isArray(arr[i][j])){
for(let y = 0; y < arr[i][j].length; y++){
if(Array.isArray(arr[i][j][y])){
for(let x = 0; x < arr[i][j][y].length; x++){
if(!Array.isArray(arr[i][j][y][x])){
newArr.push(arr[i][j][y][x]);
}
}
} else {
newArr.push(arr[i][j][y]);
}
}
} else {
newArr.push(arr[i][j]);
}
}
} else {
newArr.push(arr[i]);
}
}
return newArr;
console.log(newArr);
}
steamrollArray([1, 2, [3], [1, 2]]);
```

**Your browser information:**

User Agent is: `Mozilla/5.0 (Macintosh; Intel Mac OS X 10_13_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/69.0.3497.100 Safari/537.36`

.

**Link to the challenge:**

https://learn.freecodecamp.org/javascript-algorithms-and-data-structures/intermediate-algorithm-scripting/steamroller