benutze std::accumulate statt einer Schleife

1 files changed, 5 insertions, 6 deletions

diff --git a/2024/src/day01.cpp b/2024/src/day01.cpp
index 61b3c29..6578c54 100644
--- a/2024/src/day01.cpp
+++ b/2024/src/day01.cpp
@@ -3,6 +3,7 @@
 #include <fstream>
 #include <iostream>
 #include <map>
+#include <numeric>
 #include <tuple>
 #include <vector>
 using namespace std;
@@ -39,8 +40,7 @@ part1(const vector<tuple<long, long>>& data)
 
         long total_distance = 0;
         for ( size_t i = 0; i != lefts.size(); ++i ) {
-                long distance = abs(lefts[i] - rights[i]);
-                total_distance += distance;
+                total_distance += abs(lefts[i] - rights[i]);
         }
         cout << total_distance << endl;
 }
@@ -56,10 +56,9 @@ part2(const vector<tuple<long, long>>& data)
                 rights[rhs]++;
         }
 
-        long score = 0;
-        for ( const auto& lhs: lefts ) {
-                score += lhs * rights[lhs];
-        }
+        auto score = accumulate(lefts.begin(), lefts.end(), 0, [&](auto init, auto lhs) {
+                return init + lhs * rights[lhs];
+        });
         cout << score << endl;
 }