<h2 id="heading-url">URL</h2>
<p><a target="_blank" href="https://leetcode.com/problems/minimum-recolors-to-get-k-consecutive-black-blocks/description/?envType=daily-question&amp;envId=2025-03-08">https://leetcode.com/problems/minimum-recolors-to-get-k-consecutive-black-blocks/description/?envType=daily-question&amp;envId=2025-03-08</a></p>
<h2 id="heading-code">Code</h2>
<p><a target="_blank" href="https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/challenge/202503/minimum_recolors_to_get_k_consecutive_black_blocks/main.fsx">https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/challenge/202503/minimum_recolors_to_get_k_consecutive_black_blocks/main.fsx</a></p>
<pre><code class="lang-fsharp"><span class="hljs-keyword">let</span> minimumRecolors (blocks: string) (k: int) : int =
    <span class="hljs-keyword">let</span> countWhite = Array.filter ((=) <span class="hljs-symbol">'W</span>') &gt;&gt; Array.length

    blocks
    |&gt; Seq.windowed k
    |&gt; Seq.fold (<span class="hljs-keyword">fun</span> acc v -&gt; min acc (countWhite v)) blocks.Length
</code></pre>


## URL

[https://leetcode.com/problems/minimum-recolors-to-get-k-consecutive-black-blocks/description/?envType=daily-question&envId=2025-03-08](https://leetcode.com/problems/minimum-recolors-to-get-k-consecutive-black-blocks/description/?envType=daily-question&envId=2025-03-08)

## Code

[https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/challenge/202503/minimum\_recolors\_to\_get\_k\_consecutive\_black\_blocks/main.fsx](https://github.com/syohex/dotnet-study/blob/master/fsharp/leetcode/challenge/202503/minimum_recolors_to_get_k_consecutive_black_blocks/main.fsx)

```fsharp
let minimumRecolors (blocks: string) (k: int) : int =
    let countWhite = Array.filter ((=) 'W') >> Array.length

    blocks
    |> Seq.windowed k
    |> Seq.fold (fun acc v -> min acc (countWhite v)) blocks.Length
```

LeetCode 2379. Minimum Recolors to Get K Consecutive Black Blocks in F#

URL

Code