<h2 id="heading-url">URL</h2>
<a target="_blank" href="https://leetcode.com/problems/find-the-pivot-integer/description/?envType=daily-question&amp;envId=2024-03-13">Find the Pivot Integer - LeetCode</a>
<h2 id="heading-code">Code</h2>
<a target="_blank" href="https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202403/find_the_pivot_integer/main.fsx">https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202403/find_the_pivot_integer/main.fsx</a>
<pre><code class="lang-fsharp">let pivotInteger (n: int) : int =
 let rec pivotInteger' i n sum total =
 if i &gt; n then
 -1
 else
 let sum' = sum + i

 if sum' = total - sum then
 i
 else
 pivotInteger' (i + 1) n sum' total

 let total = (1 + n) * n / 2
 pivotInteger' 1 n 0 total
</code></pre>

## URL

[Find the Pivot Integer - LeetCode](https://leetcode.com/problems/find-the-pivot-integer/description/?envType=daily-question&envId=2024-03-13)

## Code

[https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202403/find\_the\_pivot\_integer/main.fsx](https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202403/find_the_pivot_integer/main.fsx)

```fsharp
let pivotInteger (n: int) : int =
    let rec pivotInteger' i n sum total =
        if i > n then
            -1
        else
            let sum' = sum + i

            if sum' = total - sum then
                i
            else
                pivotInteger' (i + 1) n sum' total

    let total = (1 + n) * n / 2
    pivotInteger' 1 n 0 total
```

LeetCode 2485. Find the Pivot Integer in F#

URL

Code