From a99f11a3eef3b4b06c138cafe47d5c89950784e8 Mon Sep 17 00:00:00 2001
From: Benjamin Kraft <benjamin.kraft@online.de>
Date: Thu, 21 Dec 2023 10:03:08 +0100
Subject: [PATCH] cleanup

---
 src/days/11/Day11.cpp | 65 +++++++++++++++++++------------------------
 src/days/11/Day11.h   |  2 ++
 2 files changed, 30 insertions(+), 37 deletions(-)

diff --git a/src/days/11/Day11.cpp b/src/days/11/Day11.cpp
index 515e743..248d8b6 100644
--- a/src/days/11/Day11.cpp
+++ b/src/days/11/Day11.cpp
@@ -29,38 +29,15 @@ Result Day11::Task1() {
 		}
 	}
 
-	vector<Coord> galaxies;
-	for (size_t y = 0; y < universe.size(); y++){
-		auto row = universe[y];
-		for (size_t x = 0; x < row.size(); x++)
-			if (universe[y][x])
-				galaxies.emplace_back(x, y);
-	}
-
-	uint64 sum = 0;
-
-	for (size_t i = 0; i < galaxies.size(); i++){
-		for (size_t j = i + 1; j < galaxies.size(); j++){
-			auto &[x1, y1] = galaxies[i];
-			auto &[x2, y2] = galaxies[j];
+	auto galaxies = getGalaxies(universe);
 
-			sum += std::abs(long(x2 - x1)) + std::abs(long(y2 - y1));
-		}
-	}
-
-	return to_string(sum);
+	return to_string(getDistanceSum(galaxies));
 }
 
 Result Day11::Task2() {
 	Universe universe = parseUniverse();
 
-	vector<Coord> galaxies;
-	for (size_t y = 0; y < universe.size(); y++){
-		auto row = universe[y];
-		for (size_t x = 0; x < row.size(); x++)
-			if (universe[y][x])
-				galaxies.emplace_back(x, y);
-	}
+	auto galaxies = getGalaxies(universe);
 
 	const size_t gapSize = 1000000;
 
@@ -94,6 +71,23 @@ Result Day11::Task2() {
 				gx += gapSize - 1;
 	}
 
+	return to_string(getDistanceSum(galaxies));
+}
+
+Day11::Universe Day11::parseUniverse() const {
+	Universe universe;
+
+	for (const string &line : input){
+		vector<bool> row(line.size(), false);
+		for (size_t index : findAll(line, "#"))
+			row[index] = true;
+		universe.push_back(row);
+	}
+
+	return universe;
+}
+
+uint64 Day11::getDistanceSum(const vector<Coord> &galaxies) {
 	uint64 sum = 0;
 
 	for (size_t i = 0; i < galaxies.size(); i++){
@@ -105,18 +99,15 @@ Result Day11::Task2() {
 		}
 	}
 
-	return to_string(sum);
+	return sum;
 }
 
-Day11::Universe Day11::parseUniverse() const {
-	Universe universe;
-
-	for (const string &line : input){
-		vector<bool> row(line.size(), false);
-		for (size_t index : findAll(line, "#"))
-			row[index] = true;
-		universe.push_back(row);
+vector<Day11::Coord> Day11::getGalaxies(const Day11::Universe &universe) {
+	vector<Coord> galaxies;
+	for (size_t y = 0; y < universe.size(); y++){
+		for (size_t x = 0; x < universe[y].size(); x++)
+			if (universe[y][x])
+				galaxies.emplace_back(x, y);
 	}
-
-	return universe;
+	return galaxies;
 }
diff --git a/src/days/11/Day11.h b/src/days/11/Day11.h
index c37e70a..6923891 100644
--- a/src/days/11/Day11.h
+++ b/src/days/11/Day11.h
@@ -6,6 +6,8 @@ class Day11 : public Day {
 	typedef pair<size_t, size_t> Coord;
 	typedef vector<vector<bool>> Universe;
 	Universe parseUniverse() const;
+	static vector<Coord> getGalaxies(const Universe &universe) ;
+	static uint64 getDistanceSum(const vector<Coord> &galaxies) ;
 protected:
 	Result Task1() override;