diff options
| -rw-r--r-- | day14/day14.java | 189 | ||||
| -rw-r--r-- | day14/input | 100 | ||||
| -rw-r--r-- | day14/test | 10 |
3 files changed, 299 insertions, 0 deletions
diff --git a/day14/day14.java b/day14/day14.java new file mode 100644 index 0000000..000fc5e --- /dev/null +++ b/day14/day14.java @@ -0,0 +1,189 @@ +import java.io.IOException; +import java.io.RandomAccessFile; +import java.util.ArrayList; + +public class day14 { + public static void main(String args[]) throws IOException { + RandomAccessFile input = new RandomAccessFile("input", "r"); + System.out.println("Day 14 Part 1: " + part1(input)); + input.seek(0); + System.out.println("Day 14 Part 2: " + part2(input)); + input.close(); + } + + public static String part1(RandomAccessFile input) throws IOException { + ArrayList<ArrayList<Tile>> platform = new ArrayList<>(); + + String line; + while ((line = input.readLine()) != null) { + ArrayList<Tile> row = new ArrayList<>(); + for (char ch: line.toCharArray()) { + switch (ch) { + case 'O': + row.add(Tile.Round); + break; + case '#': + row.add(Tile.Cube); + break; + case '.': + row.add(Tile.Empty); + break; + } + } + platform.add(row); + } + + tipNorth(platform); + + int load = 0, rows = platform.size(); + for (int r = 0; r < rows; r++) { + for (Tile t: platform.get(r)) { + if (t == Tile.Round) { + load += (rows - r); + } + } + } + + return Integer.toString(load); + } + + public static String part2(RandomAccessFile input) throws IOException { + return "WIP"; + /* + ArrayList<ArrayList<Tile>> platform = new ArrayList<>(); + + String line; + while ((line = input.readLine()) != null) { + ArrayList<Tile> row = new ArrayList<>(); + for (char ch: line.toCharArray()) { + switch (ch) { + case 'O': + row.add(Tile.Round); + break; + case '#': + row.add(Tile.Cube); + break; + case '.': + row.add(Tile.Empty); + break; + } + } + platform.add(row); + } + + for (long l = 0; l < 1000000000; l++) { + tipNorth(platform); + tipWest(platform); + tipSouth(platform); + tipEast(platform); + } + + int load = 0, rows = platform.size(); + for (int r = 0; r < rows; r++) { + for (Tile t: platform.get(r)) { + if (t == Tile.Round) { + load += (rows - r); + } + } + } + + return Integer.toString(load); + */ + } + + static enum Tile { + Round, + Cube, + Empty + } + + private static void tipNorth(ArrayList<ArrayList<Tile>> platform) { + int rows = platform.size(), cols = platform.get(0).size(); + for (int r = 0; r < rows; r++) { + for (int c = 0; c < cols; c++) { + if (platform.get(r).get(c) != Tile.Round) { + continue; + } + + int rat = r; + while (rat > 0) { + if (platform.get(rat - 1).get(c) == Tile.Empty) { + platform.get(rat - 1).set(c, Tile.Round); + platform.get(rat).set(c, Tile.Empty); + rat -= 1; + } else { + break; + } + } + } + } + } + + /* + private static void tipSouth(ArrayList<ArrayList<Tile>> platform) { + int rows = platform.size(), cols = platform.get(0).size(); + for (int r = (rows - 1); r >= 0; r--) { + for (int c = 0; c < cols; c++) { + if (platform.get(r).get(c) != Tile.Round) { + continue; + } + + int rat = r; + while (rat < (rows - 1)) { + if (platform.get(rat + 1).get(c) == Tile.Empty) { + platform.get(rat + 1).set(c, Tile.Round); + platform.get(rat).set(c, Tile.Empty); + rat += 1; + } else { + break; + } + } + } + } + } + + private static void tipWest(ArrayList<ArrayList<Tile>> platform) { + int rows = platform.size(), cols = platform.get(0).size(); + for (int r = 0; r < rows; r++) { + for (int c = 0; c < cols; c++) { + if (platform.get(r).get(c) != Tile.Round) { + continue; + } + + int cat = c; + while (cat > 0) { + if (platform.get(r).get(cat - 1) == Tile.Empty) { + platform.get(r).set(cat - 1, Tile.Round); + platform.get(r).set(cat, Tile.Empty); + cat -= 1; + } else { + break; + } + } + } + } + } + + private static void tipEast(ArrayList<ArrayList<Tile>> platform) { + int rows = platform.size(), cols = platform.get(0).size(); + for (int r = 0; r < rows; r++) { + for (int c = (cols - 1); c >= 0; c--) { + if (platform.get(r).get(c) != Tile.Round) { + continue; + } + + int cat = c; + while (cat < (cols - 1)) { + if (platform.get(r).get(cat + 1) == Tile.Empty) { + platform.get(r).set(cat + 1, Tile.Round); + platform.get(r).set(cat, Tile.Empty); + cat += 1; + } else { + break; + } + } + } + } + } + */ +} diff --git a/day14/input b/day14/input new file mode 100644 index 0000000..ca6e694 --- /dev/null +++ b/day14/input @@ -0,0 +1,100 @@ +O#...OO.#.#..##.#..#O.OO...O##OO.......#......O.O...O..........O..#O..O.#.#.O.....##O.#O.##......... +.OOO..OOO.O.#.....#.....#.#.....O..#..OO..#.....O#O##..##O#.OO....O##.OOO..O...#....O....#O..#...O.. +OOO#...O#...##.OOOO##.O..#.....O...#.O..#...#.O..OO..##.#....O#O..#O#..##...O.OO..#.#........#O....O +O..#..#...#.O##.......OO#.#....O.##.O..O.O#.O..O#.....#...O..OO.O.#......O.###.........#.......##... +..O.O.O..#O..OOOO..#..#..O..O#O...O....#.O#........OOO#.O...O..O#.#.O........#......#O.O...OO.#.O..O +#..O.#..##....#...O..........#..O.#..##.O.....O.O.O..O..O.O.#.OO#.#..##.........#OO.O....##...#..##. +OO.O#.#.O...O..#..#OO..O.............O.........O.#.......#OO#.O.#OOO.##OOO..OO#.....O#.O.#O.O##OO... 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