You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
79 lines
1.8 KiB
79 lines
1.8 KiB
"""
|
|
Advent of Code 2021 - day 06
|
|
|
|
Run with:
|
|
python puzzles/day06.py inputs/day06.txt
|
|
"""
|
|
|
|
import pathlib
|
|
import sys
|
|
|
|
from dataclasses import dataclass
|
|
from typing import List, Tuple
|
|
|
|
|
|
@dataclass
|
|
class LanternFish:
|
|
reproduce_timer: int
|
|
children: int = 0
|
|
|
|
class FishSchool:
|
|
fish = None
|
|
|
|
def __init__(self, times: List[int]) -> None:
|
|
self.fish = []
|
|
for time in times:
|
|
self.fish.append(LanternFish(reproduce_timer=time))
|
|
|
|
def simulate(self, days: int=80) -> None:
|
|
for day in range(days):
|
|
self._check_school()
|
|
|
|
def _check_school(self) -> None:
|
|
for index, fish in enumerate(self.fish):
|
|
if fish.reproduce_timer == 0:
|
|
self.fish.append(LanternFish(reproduce_timer=9)) # Need to correct (should be 8)
|
|
self.fish[index].reproduce_timer = 6
|
|
self.fish[index].children += 1
|
|
else:
|
|
self.fish[index].reproduce_timer -= 1
|
|
|
|
|
|
def part1(inputs: List[int]) -> int:
|
|
school = FishSchool(inputs)
|
|
school.simulate(days=80)
|
|
return len(school.fish)
|
|
|
|
|
|
def part2(inputs: List[int]) -> int:
|
|
school = FishSchool(inputs)
|
|
school.simulate(days=256)
|
|
return len(school.fish)
|
|
|
|
|
|
def parse(inputs: str) -> List[int]:
|
|
"""Parse the input string"""
|
|
return [int(value) for value in inputs.split(",")]
|
|
|
|
|
|
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()
|