# 47. reverse a linked list

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Another basic algorithm even for Front End developers.

You are asked to **reverse a linked list**.

Suppose we have Node interface like this

```
class Node {
new(val: number, next: Node);
val: number
next: Node
}
```

We can then chain nodes together to create a linked list.

```
const Three = new Node(3, null)
const Two = new Node(2, Three)
const One = new Node(1, Two)
//now we have a linked list
// 1 → 2 → 3
```

Now how can you reverse it to 3 → 2 → 1 ? you can modify the `next`

property of each node, but not the `val`

.

*Follow up*

Could you solve it with and without recursion?