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+down 2 +down 4 +forward 6 +up 2 +forward 5 +up 8 +forward 8 +forward 2 +forward 6 +forward 3 +up 4 +forward 3 +forward 6 diff --git a/puzzles/day02.py b/puzzles/day02.py new file mode 100644 index 0000000..245b734 --- /dev/null +++ b/puzzles/day02.py @@ -0,0 +1,93 @@ +""" +Advent of Code 2021 - Day 02 + +Run with: + python puzzles/day02.py inputs/day02.txt + +This is overly complicated to keep tests similar while also using dataclasses for learning +""" + +import pathlib +import sys +from typing import List, Tuple + +from dataclasses import dataclass + + +@dataclass +class Location: + horizontal = 0 + depth = 0 + aim = 0 + + def run(self, inputs: List[str]) -> int: + for line in inputs: + # forward 20 -> self.forward(20) + step = line.split() + getattr(self, step[0])(int(step[1])) + + return self.calculate() + + def calculate(self) -> int: + return self.horizontal * self.depth + + +class Part1(Location): + def forward(self, distance: int) -> None: + self.horizontal += distance + + def up(self, distance: int) -> None: + self.depth -= distance + + def down(self, distance: int) -> None: + self.depth += distance + + +class Part2(Location): + def forward(self, distance: int) -> None: + self.horizontal += distance + self.depth += self.aim * distance + + def up(self, distance: int) -> None: + self.aim -= distance + + def down(self, distance: int) -> None: + self.aim += distance + + +def part1(inputs: List[int]) -> int: + puzzle = Part1() + return puzzle.run(inputs) + + +def part2(inputs: List[int]) -> int: + puzzle = Part2() + return puzzle.run(inputs) + + +def parse(inputs: str) -> List[str]: + """Parse the input string""" + return inputs.split("\n") + + +def solve(path: str) -> Tuple[int, int]: + """Solve the puzzle""" + puzzle_input = parse(pathlib.Path(path).read_text().strip()) + part1_result = part1(puzzle_input) + part2_result = part2(puzzle_input) + + return part1_result, part2_result + + +def main() -> None: + for path in sys.argv[1:]: + print(f"Input File: {path}") + + part1_result, part2_result = solve(path) + + print(f"Part 1 Result: {part1_result}") + print(f"Part 2 Result: {part2_result}") + + +if __name__ == "__main__": + main() diff --git a/puzzles/test_day02.py b/puzzles/test_day02.py new file mode 100644 index 0000000..8705b94 --- /dev/null +++ b/puzzles/test_day02.py @@ -0,0 +1,32 @@ +import pathlib +import pytest +import day02 as aoc + +INPUTS_DIR = f"{pathlib.Path(__file__).parent.parent}/inputs" + +@pytest.fixture +def example_data(): + input_path = f"{INPUTS_DIR}/day02-example1.txt" + return aoc.parse(pathlib.Path(input_path).read_text().strip()) + + +@pytest.fixture +def day02_data(): + input_path = f"{INPUTS_DIR}/day02.txt" + return aoc.parse(pathlib.Path(input_path).read_text().strip()) + + +def test_example1(example_data): + assert aoc.part1(example_data) == 150 + + +def test_example2(example_data): + assert aoc.part2(example_data) == 900 + + +def test_part1(day02_data): + assert aoc.part1(day02_data) == 1670340 + + +def test_part2(day02_data): + assert aoc.part2(day02_data) == 1954293920