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Solve day 5 part 2

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Gabriel Augendre 2022-12-05 19:25:02 +01:00
parent bd7503ee39
commit 2bfdba73a6
1 changed files with 33 additions and 13 deletions
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46
2022/day05_supply_stacks.py
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@ -1,5 +1,6 @@
from __future__ import annotations from __future__ import annotations
import copy
import dataclasses import dataclasses
import re import re
@ -9,14 +10,14 @@ def main(filename: str, expected_part_1: str = None, expected_part_2: str = None
with open(filename) as f: with open(filename) as f:
data = f.read().rstrip().split("\n\n") data = f.read().rstrip().split("\n\n")
data = parse_data(data) data_1, data_2 = parse_data(data)
solution_part_1 = solve_part_1(data) solution_part_1 = solve_part_1(data_1)
print(f"1. Found {solution_part_1}") print(f"1. Found {solution_part_1}")
if expected_part_1: if expected_part_1:
assert expected_part_1 == solution_part_1 assert expected_part_1 == solution_part_1
solution_part_2 = solve_part_2(data) solution_part_2 = solve_part_2(data_2)
print(f"2. Found {solution_part_2}") print(f"2. Found {solution_part_2}")
if expected_part_2: if expected_part_2:
assert expected_part_2 == solution_part_2 assert expected_part_2 == solution_part_2
@ -48,14 +49,15 @@ class Game:
stacks: list[list[str]] stacks: list[list[str]]
instructions: list[Instruction] instructions: list[Instruction]
def __str__(self):
return "\n".join(map(str, self.stacks))
def play_instructions(self) -> None: def play_instructions(self) -> None:
for instruction in self.instructions: for instruction in self.instructions:
self.execute(instruction) self.execute(instruction)
def execute(self, instruction: Instruction) -> None: def execute(self, instruction: Instruction) -> None:
for _ in range(instruction.quantity): raise NotImplementedError()
item = self.stacks[instruction.source].pop()
self.stacks[instruction.destination].append(item)
def message(self) -> str: def message(self) -> str:
msg = "" msg = ""
@ -64,14 +66,29 @@ class Game:
msg += stack[-1] msg += stack[-1]
return msg return msg
def __str__(self):
return "\n".join(map(str, self.stacks)) class Game1(Game):
def execute(self, instruction: Instruction) -> None:
for _ in range(instruction.quantity):
item = self.stacks[instruction.source].pop()
self.stacks[instruction.destination].append(item)
class Game2(Game):
def execute(self, instruction: Instruction) -> None:
temp_stack = []
for _ in range(instruction.quantity):
item = self.stacks[instruction.source].pop()
temp_stack.append(item)
for _ in range(instruction.quantity):
item = temp_stack.pop()
self.stacks[instruction.destination].append(item)
DataType = Game DataType = Game
def parse_data(data: list[str]) -> DataType: def parse_data(data: list[str]) -> tuple[DataType, DataType]:
stacks, instructions = data stacks, instructions = data
parsed_instructions = [] parsed_instructions = []
for instruction in instructions.split("\n"): for instruction in instructions.split("\n"):
@ -88,7 +105,9 @@ def parse_data(data: list[str]) -> DataType:
break break
stack.append(char) stack.append(char)
parsed_stacks.append(stack) parsed_stacks.append(stack)
return Game(parsed_stacks, parsed_instructions) return Game1(
copy.deepcopy(parsed_stacks), copy.deepcopy(parsed_instructions)
), Game2(copy.deepcopy(parsed_stacks), copy.deepcopy(parsed_instructions))
def solve_part_1(data: DataType) -> str: def solve_part_1(data: DataType) -> str:
@ -97,9 +116,10 @@ def solve_part_1(data: DataType) -> str:
def solve_part_2(data: DataType) -> str: def solve_part_2(data: DataType) -> str:
return "0" data.play_instructions()
return data.message()
if __name__ == "__main__": if __name__ == "__main__":
main("inputs/day05-test1", expected_part_1="CMZ") main("inputs/day05-test1", expected_part_1="CMZ", expected_part_2="MCD")
main("inputs/day05") main("inputs/day05", expected_part_1="BWNCQRMDB", expected_part_2="NHWZCBNBF")