<h2 id="heading-url">URL</h2>
<p><a target="_blank" href="https://leetcode.com/problems/counting-words-with-a-given-prefix/description/?envType=daily-question&amp;envId=2025-01-09">Counting Words With a Given Prefix - LeetCode</a></p>
<h2 id="heading-code">Code</h2>
<p><a target="_blank" href="https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202501/counting_words_with_a_given_prefix/main.fsx">https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202501/counting_words_with_a_given_prefix/main.fsx</a></p>
<pre><code class="lang-fsharp"><span class="hljs-keyword">let</span> prefixCount (words: string list) (pref: string) : int =
    words |&gt; List.filter (<span class="hljs-keyword">fun</span> (s: string) -&gt; s.StartsWith(pref)) |&gt; List.length
</code></pre>


## URL

[Counting Words With a Given Prefix - LeetCode](https://leetcode.com/problems/counting-words-with-a-given-prefix/description/?envType=daily-question&envId=2025-01-09)

## Code

[https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202501/counting\_words\_with\_a\_given\_prefix/main.fsx](https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202501/counting_words_with_a_given_prefix/main.fsx)

```fsharp
let prefixCount (words: string list) (pref: string) : int =
    words |> List.filter (fun (s: string) -> s.StartsWith(pref)) |> List.length
```

LeetCode 2185. Counting Words With a Given Prefix in F#

URL

Code