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/day18.cpp | 115 ----------------------------------------------------------
 1 file changed, 115 deletions(-)
 delete mode 100644 src/day18.cpp

(limited to 'src/day18.cpp')

diff --git a/src/day18.cpp b/src/day18.cpp
deleted file mode 100644
index 3037739..0000000
--- a/src/day18.cpp
+++ /dev/null
@@ -1,115 +0,0 @@
-#include <fstream>
-#include <iostream>
-#include <map>
-#include <sstream>
-#include <string>
-#include <vector>
-using namespace std;
-
-using puzzle_t = vector<pair<long, long>>;
-
-puzzle_t
-read_file_part1(string_view filename, long& border_steps)
-{
-	static map<char, pair<int, int>> movement = {
-		{ 'U', { 0, -1 } }, // up
-		{ 'D', { 0, 1 } },  // down
-		{ 'L', { -1, 0 } }, // left
-		{ 'R', { 1, 0 } },  // right
-	};
-
-	border_steps = 0;
-
-	fstream  input{ filename };
-	puzzle_t data;
-
-	data.emplace_back(0, 0);
-
-	for ( string line; getline(input, line); ) {
-		char         dir{};
-		long         steps{};
-		stringstream sstrm{ line };
-
-		if ( sstrm >> dir >> steps ) {
-			data.emplace_back(get<0>(data.back()) + get<0>(movement[dir]) * steps,
-			                  get<1>(data.back()) + get<1>(movement[dir]) * steps);
-
-			border_steps += steps;
-		}
-	}
-
-	return data;
-}
-
-puzzle_t
-read_file_part2(string_view filename, long& border_steps)
-{
-	static map<char, pair<int, int>> movement = {
-		{ '0', { 1, 0 } },  // right
-		{ '1', { 0, 1 } },  // down
-		{ '2', { -1, 0 } }, // left
-		{ '3', { 0, -1 } }, // up
-	};
-
-	border_steps = 0;
-
-	fstream  input{ filename };
-	puzzle_t data;
-
-	data.emplace_back(0, 0);
-
-	for ( string line; getline(input, line); ) {
-		char         dir{};
-		long         steps{};
-		string       hexcode;
-		stringstream sstrm{ line };
-
-		if ( sstrm >> dir >> steps >> hexcode ) {
-			steps = stol(hexcode.substr(2, 5), nullptr, 16);
-			dir   = hexcode[7];
-
-			data.emplace_back(get<0>(data.back()) + get<0>(movement[dir]) * steps,
-			                  get<1>(data.back()) + get<1>(movement[dir]) * steps);
-
-			border_steps += steps;
-		}
-	}
-
-	return data;
-}
-
-long
-shoelace(const puzzle_t& puzzle, const long border_steps)
-{
-	long area = 0;
-	for ( size_t i = 1; i < puzzle.size(); ++i ) {
-		const auto [x1, y1] = puzzle[i - 1];
-		const auto [x2, y2] = puzzle[i];
-
-		area += (x1 * y2 - y1 * x2);
-	}
-	return (border_steps + area) / 2 + 1;
-}
-
-void
-part1()
-{
-	long border_steps = 0;
-	auto puzzle       = read_file_part1("data/day18.txt", border_steps);
-	cout << shoelace(puzzle, border_steps) << endl;
-}
-
-void
-part2()
-{
-	long border_steps = 0;
-	auto puzzle       = read_file_part2("data/day18.txt", border_steps);
-	cout << shoelace(puzzle, border_steps) << endl;
-}
-
-int
-main()
-{
-	part1();
-	part2();
-}
-- 
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