<h2 id="heading-url">URL</h2>
<p><a href="https://leetcode.com/problems/missing-number/" class="autolinkedURL autolinkedURL-url" target="_blank">leetcode.com/problems/missing-number</a></p>
<h2 id="heading-code">Code</h2>
<p><a href="https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/problems/0268/main.fsx" class="autolinkedURL autolinkedURL-url" target="_blank">github.com/syohex/dotnet-study/blob/master/..</a></p>
<pre><code class="lang-fsharp">let missingNumber (nums: int list) : int =
    let len = nums.Length
    let expected = (1 + len) * len / 2
    let sum = nums |&gt; List.sum
    expected - sum
</code></pre>


## URL

https://leetcode.com/problems/missing-number/

## Code

https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/problems/0268/main.fsx

```fsharp
let missingNumber (nums: int list) : int =
    let len = nums.Length
    let expected = (1 + len) * len / 2
    let sum = nums |> List.sum
    expected - sum
```

LeetCode 268. Missing Number in F#

URL

Code