From f51f87736b6bf86bf9142194951518522ed0d706 Mon Sep 17 00:00:00 2001
From: chrisly42 <chrisly@platon42.de>
Date: Fri, 5 Dec 2025 06:27:46 +0100
Subject: [PATCH] Minor tweaking of Day 5.

---
 src/aoc2025/Day05.kt | 9 +--------
 1 file changed, 1 insertion(+), 8 deletions(-)

diff --git a/src/aoc2025/Day05.kt b/src/aoc2025/Day05.kt
index 05655ae..0842f52 100644
--- a/src/aoc2025/Day05.kt
+++ b/src/aoc2025/Day05.kt
@@ -38,7 +38,6 @@ fun main() {
     }
 
     fun part2(input: List<String>): Long {
-        var freshSum = 0L
         val ranges = ArrayList<LongRange>()
         for (i in input) {
             if (i.contains("-")) {
@@ -61,13 +60,7 @@ fun main() {
             }
         }
         consolidated.add(LongRange(lastLow, lastHigh))
-
-        for (r in consolidated) {
-            val e = r.last - r.first + 1
-            // had read that you should sum all of the IDs, then it would have been e * r.first + (e * e + 1) / 2
-            freshSum += e
-        }
-        return freshSum
+        return consolidated.sumOf { it.last - it.first + 1 }
     }
 
     // test if implementation meets criteria from the description, like: