<h2 id="heading-url">URL</h2>
<p><a href="https://leetcode.com/problems/set-mismatch/" class="autolinkedURL autolinkedURL-url" target="_blank">leetcode.com/problems/set-mismatch</a></p>
<h2 id="heading-code">Code</h2>
<p><a href="https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/problems/0645/main.fsx" class="autolinkedURL autolinkedURL-url" target="_blank">github.com/syohex/dotnet-study/blob/master/..</a></p>
<pre><code class="lang-fsharp">let findErrorNums (nums: int list) : (int * int) =
    let rec findErrorNums' nums duplicated acc =
        match nums with
        | [] -&gt; duplicated, (Array.findIndex (fun n -&gt; n = 0) acc) + 1
        | h :: t -&gt;
            acc.[h - 1] &lt;- acc.[h - 1] + 1

            if acc.[h - 1] = 2 then
                findErrorNums' t h acc
            else
                findErrorNums' t duplicated acc

    findErrorNums' nums -1 (Array.zeroCreate nums.Length)
</code></pre>


## URL

https://leetcode.com/problems/set-mismatch/

## Code

https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/problems/0645/main.fsx

```fsharp
let findErrorNums (nums: int list) : (int * int) =
    let rec findErrorNums' nums duplicated acc =
        match nums with
        | [] -> duplicated, (Array.findIndex (fun n -> n = 0) acc) + 1
        | h :: t ->
            acc.[h - 1] <- acc.[h - 1] + 1

            if acc.[h - 1] = 2 then
                findErrorNums' t h acc
            else
                findErrorNums' t duplicated acc

    findErrorNums' nums -1 (Array.zeroCreate nums.Length)
```

LeetCode 645. Set Mismatch in F#

URL

Code