<h2 id="heading-url">URL</h2>
<a target="_blank" href="https://leetcode.com/problems/n-ary-tree-postorder-traversal/description/?envType=daily-question&amp;envId=2024-08-26">https://leetcode.com/problems/n-ary-tree-postorder-traversal/description/?envType=daily-question&amp;envId=2024-08-26</a>
<h2 id="heading-code">Code</h2>
<a target="_blank" href="https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/challenge/202408/n-ary-tree-post-order-traversal/main.fsx">https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/challenge/202408/n-ary-tree-post-order-traversal/main.fsx</a>
<pre><code class="lang-fsharp">type Node =
 | Leaf
 | Node of int * Node list

let postorder (root: Node) : int list =
 let rec postorder' node acc =
 match node with
 | Leaf -&gt; acc
 | Node(v, children) -&gt;
 let acc = children |&gt; List.fold (fun acc child -&gt; postorder' child acc) acc
 v :: acc

 postorder' root [] |&gt; List.rev
</code></pre>

## URL

[https://leetcode.com/problems/n-ary-tree-postorder-traversal/description/?envType=daily-question&envId=2024-08-26](https://leetcode.com/problems/n-ary-tree-postorder-traversal/description/?envType=daily-question&envId=2024-08-26)

## Code

[https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/challenge/202408/n-ary-tree-post-order-traversal/main.fsx](https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/challenge/202408/n-ary-tree-post-order-traversal/main.fsx)

```fsharp
type Node =
    | Leaf
    | Node of int * Node list

let postorder (root: Node) : int list =
    let rec postorder' node acc =
        match node with
        | Leaf -> acc
        | Node(v, children) ->
            let acc = children |> List.fold (fun acc child -> postorder' child acc) acc
            v :: acc

    postorder' root [] |> List.rev
```

LeetCode 590. N-ary Tree Postorder Traversal in F#

URL

Code