# ** Explanation Needed ** Create complex multi-dimensional arrays

Here’s the example:

``````let nestedArray = [
['deep'],
[
['deeper'], ['deeper']
],
[
[
['deepest'], ['deepest']
],
[
[
['deepest-est?']
]
]
]
];
``````

And this code is being used to retrieve ‘deepest-est’.

``````console.log(nestedArray[2][1][0][0][0]);
``````

Could anyone explain to me how the numbers came about? I have trouble identifying or counting the level of arrays.

Have you tried

``````console.log("Level 0");
console.log(nestedArray[2]);
console.log("Level 1");
console.log(nestedArray[2][1]);
console.log("Level 2");
console.log(nestedArray[2][1][0]);
console.log("Level 3");
console.log(nestedArray[2][1][0][0]);
console.log("Level 4");
console.log(nestedArray[2][1][0][0][0]);
``````
2 Likes

Whenever you are confused about nesting levels, slowly walk through the process.

Our nestedArray has three large elements.

Here is `nestedArray[0]`

Here is `nestedArray[1]`

Here is `nestedArray[2]`

The word we are looking for is in `nestedArray[2]`
This array has two elements

Here is the first one `nestedArray[2][0]`

Here is the second one `nestedArray[2][1]`

The word we are looking for is in `nestedArray[2][1]`
Inside this array we have just one array.

Now we have `nestedArray[2][1][0]`
Then we have another array inside that

Now we have `nestedArray[2][1][0][0]`

If you just want to return the string `deepest-est? ` then we use bracket notation again to access the first element of that array.

Now we are at the final code of `nestedArray[2][1][0][0][0]`

Hope that helps!

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