From 629467f3769d1760caed9128aed9c7d8328f66b6 Mon Sep 17 00:00:00 2001
From: Sebastian Lindemeier <lindemeier.sebastian@bgetem.de>
Date: Mon, 8 Dec 2025 09:35:26 +0100
Subject: [PATCH] Refactor Day08 to improve readability with LINQ

---
 AoC_2025/Day08.cs | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

diff --git a/AoC_2025/Day08.cs b/AoC_2025/Day08.cs
index 22f3284..374c91f 100644
--- a/AoC_2025/Day08.cs
+++ b/AoC_2025/Day08.cs
@@ -123,10 +123,14 @@ public class Day08
         return combinations;
     }
 
-    private IEnumerable<(TValue a, TValue b)> Combinations<TValue>(IEnumerable<TValue> values)
+    private IEnumerable<(TValue a, TValue b)> Combinations<TValue>(IEnumerable<TValue> values) where TValue:IComparable
     {
-        var enumerated = values.ToArray();
-        return enumerated
-            .SelectMany((valueA, ix) => enumerated.Skip(ix + 1).Select(valueB => (valueA, valueB)));
+        var enumeratedValues = values.Index().ToArray();
+        var pairs = 
+            from a in enumeratedValues
+            from b in enumeratedValues
+            where a.Index < b.Index
+            select (a.Item, b.Item);
+        return pairs;
     }
 }
\ No newline at end of file