<h2 id="heading-url">URL</h2>
<a target="_blank" href="https://leetcode.com/problems/bitwise-xor-of-all-pairings/description/?envType=daily-question&amp;envId=2025-01-16">Bitwise XOR of All Pairings - LeetCode</a>
<h2 id="heading-code">Code</h2>
<a target="_blank" href="https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202501/bitwise_xor_of_all_pairings/main.fsx">https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202501/bitwise_xor_of_all_pairings/main.fsx</a>
<pre><code class="lang-fsharp">let xorAllNums (nums1: int list) (nums2: int list) : int =
 let e1 = List.reduce (fun a b -&gt; a ^^^ b) nums1
 let e2 = List.reduce (fun a b -&gt; a ^^^ b) nums2

 match List.length nums1 % 2, List.length nums2 % 2 with
 | 0, 0 -&gt; 0
 | 1, 0 -&gt; e2
 | 0, 1 -&gt; e1
 | 1, 1 -&gt; e1 ^^^ e2
 | _ -&gt; failwith "never reach here"
</code></pre>

## URL

[Bitwise XOR of All Pairings - LeetCode](https://leetcode.com/problems/bitwise-xor-of-all-pairings/description/?envType=daily-question&envId=2025-01-16)

## Code

[https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202501/bitwise\_xor\_of\_all\_pairings/main.fsx](https://github.com/syohex/dotnet-study/tree/master/fsharp/leetcode/challenge/202501/bitwise_xor_of_all_pairings/main.fsx)

```fsharp
let xorAllNums (nums1: int list) (nums2: int list) : int =
    let e1 = List.reduce (fun a b -> a ^^^ b) nums1
    let e2 = List.reduce (fun a b -> a ^^^ b) nums2

    match List.length nums1 % 2, List.length nums2 % 2 with
    | 0, 0 -> 0
    | 1, 0 -> e2
    | 0, 1 -> e1
    | 1, 1 -> e1 ^^^ e2
    | _ -> failwith "never reach here"
```

LeetCode 2425. Bitwise XOR of All Pairings in F#

URL

Code