<h2 id="heading-url">URL</h2>
<p><a target="_blank" href="https://leetcode.com/problems/missing-number/description/?envType=daily-question&amp;envId=2024-02-20">https://leetcode.com/problems/missing-number/description/?envType=daily-question&amp;envId=2024-02-20</a></p>
<h2 id="heading-code">Code</h2>
<p><a target="_blank" href="https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202402/missing_number/main.fsx">https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202402/missing_number/main.fsx</a></p>
<pre><code class="lang-fsharp"><span class="hljs-keyword">let</span> missingNumber (nums: int list) : int =
    <span class="hljs-keyword">let</span> n = List.length nums
    <span class="hljs-keyword">let</span> v = seq { <span class="hljs-number">0</span> .. (n - <span class="hljs-number">1</span>) } |&gt; Seq.fold (<span class="hljs-keyword">fun</span> acc m -&gt; acc ^^^ m) n
    nums |&gt; List.fold (<span class="hljs-keyword">fun</span> acc m -&gt; acc ^^^ m) v
</code></pre>


## URL

[https://leetcode.com/problems/missing-number/description/?envType=daily-question&envId=2024-02-20](https://leetcode.com/problems/missing-number/description/?envType=daily-question&envId=2024-02-20)

## Code

[https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202402/missing\_number/main.fsx](https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202402/missing_number/main.fsx)

```fsharp
let missingNumber (nums: int list) : int =
    let n = List.length nums
    let v = seq { 0 .. (n - 1) } |> Seq.fold (fun acc m -> acc ^^^ m) n
    nums |> List.fold (fun acc m -> acc ^^^ m) v
```

LeetCode 268. Missing Number in F#

URL

Code