From 56e890cec0a28c0a485212ccebfaf774235a79a2 Mon Sep 17 00:00:00 2001
From: Thomas Schmucker <ts@its1.de>
Date: Wed, 3 Jan 2024 23:35:54 +0100
Subject: prepare for more puzzles ... :)

---
 src/day03.cpp | 174 ----------------------------------------------------------
 1 file changed, 174 deletions(-)
 delete mode 100644 src/day03.cpp

(limited to 'src/day03.cpp')

diff --git a/src/day03.cpp b/src/day03.cpp
deleted file mode 100644
index b266f59..0000000
--- a/src/day03.cpp
+++ /dev/null
@@ -1,174 +0,0 @@
-#include <cctype>
-#include <fstream>
-#include <iostream>
-#include <string>
-#include <string_view>
-#include <vector>
-
-using namespace std;
-
-vector<string>
-read_file(string_view filename)
-{
-	fstream        input{ filename };
-	vector<string> data;
-
-	for ( string line; getline(input, line); ) {
-		data.emplace_back(line);
-	}
-
-	return data;
-}
-
-bool
-is_digit(char chr)
-{
-	return std::isdigit(static_cast<unsigned char>(chr)) != 0;
-}
-
-vector<tuple<size_t, size_t>>
-positions(size_t row, size_t col)
-{
-	return {
-		{ row - 1, col - 1 },
-		{ row - 0, col - 1 },
-		{ row + 1, col - 1 },
-
-		{ row - 1, col },
-		{ row + 1, col },
-
-		{ row - 1, col + 1 },
-		{ row - 0, col + 1 },
-		{ row + 1, col + 1 },
-	};
-}
-
-void
-part1() // NOLINT
-{
-	auto lines = read_file("data/day03.txt");
-
-	auto is_symbol = [&lines](size_t row, size_t col) -> bool {
-		static const string symbols{ "*#+$%=-@&/" };
-
-		if ( row >= lines.size() || col >= lines[row].size() ) {
-			return false;
-		}
-
-		auto symbol = lines[row][col];
-
-		return symbols.find(symbol) != string::npos;
-	};
-
-	auto bordering = [&is_symbol](size_t row, size_t col) -> bool {
-		bool result = false;
-
-		for (const auto& position: positions(row, col)) {
-			result |= is_symbol(get<0>(position), get<1>(position));
-		}
-
-		return result;
-	};
-
-	auto sum = 0;
-	for ( size_t row = 0; row != lines.size(); ++row ) {
-		const auto& line = lines[row];
-
-		string::size_type start = 0;
-		while ( start != line.size() ) {
-			while ( start != line.size() && !is_digit(line[start]) ) {
-				++start;
-			}
-
-			auto end = start;
-			while ( end != line.size() && is_digit(line[end]) ) {
-				++end;
-			}
-
-			if ( start != end ) {
-				auto result = false;
-
-				for ( auto col = start; col != end; ++col ) {
-					result |= bordering(row, col);
-				}
-
-				if ( result ) {
-					sum += stoi(line.substr(start, end - start));
-				}
-
-				start = end;
-			}
-		}
-	}
-	cout << sum << endl;
-}
-
-void
-part2() // NOLINT
-{
-	auto lines = read_file("data/day03.txt");
-
-	auto find_integer = [](vector<string>& lines, size_t row, size_t col, int& value) -> bool { // NOLINT
-		if ( row >= lines.size() || col >= lines[row].size() ) {
-			return false;
-		}
-
-		auto& line = lines[row];
-
-		if ( !is_digit(line[col]) ) {
-			return false;
-		}
-
-		// Anfang der Zahl suchen
-		auto start = col;
-		for ( ; start != 0 && is_digit(line[start - 1]); --start ) // NOLINT
-			;
-
-		auto end = col;
-		for ( ; end != line.size() && is_digit(line[end]); ++end ) // NOLINT
-			;
-
-		value = stoi(line.substr(start, end - start));
-
-		for ( ; start != end; ++start ) {
-			line[start] = '.';
-		}
-
-		return true;
-	};
-
-	auto sum = 0;
-	for ( size_t row = 0; row != lines.size(); ++row ) {
-		const auto& line = lines[row];
-
-		auto col = line.find('*');
-		while ( col != string::npos ) {
-			vector<int> values;
-
-			auto lines_copy{ lines };
-
-			for ( const auto& position: positions(row, col) ) {
-				auto value = 0;
-
-				if ( find_integer(lines_copy, get<0>(position), get<1>(position), value) ) {
-					values.emplace_back(value);
-				}
-			}
-
-			if ( values.size() == 2 ) {
-				auto ratio = values[0] * values[1];
-				sum += ratio;
-			}
-
-			col = line.find('*', col + 1);
-		}
-	}
-	cout << sum << endl;
-}
-
-int
-main()
-{
-	part1();
-	part2();
-}
-- 
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