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67 lines
1.9 KiB
Python
67 lines
1.9 KiB
Python
import os
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from typing import List, Tuple
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class RPS:
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ROCK = "R"
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PAPER = "P"
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SCISSOR = "S"
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ROCK_SCORE = 1
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PAPER_SCORE = 2
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SCISSOR_SCORE = 3
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WIN_SCORE = 6
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DRAW_SCORE = 3
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LOSS_SCORE = 0
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RPS_SYM_TO_SHAPE = {
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"A": ROCK,
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"X": ROCK,
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"B": PAPER,
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"Y": PAPER,
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"C": SCISSOR,
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"Z": SCISSOR
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}
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RPS_SHAPE_TO_SCORE = {
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ROCK: ROCK_SCORE,
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PAPER: PAPER_SCORE,
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SCISSOR: SCISSOR_SCORE
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}
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class RockPaperScissorGuide:
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"""
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Day 2 - Rock Paper Scissors
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The Elves begin to set up camp on the beach. To decide whose tent gets to be closest to the snack storage,
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a giant Rock Paper Scissors tournament is already in progress.
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One Elf gives you an encrypted strategy guide (your puzzle input) that they say will be sure to help you win.
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The first column is what your opponent is going to play: A for Rock, B for Paper, and C for Scissors.
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The second column, you reason, must be what you should play in response: X for Rock, Y for Paper,
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and Z for Scissors. Winning every time would be suspicious, so the responses must have been carefully chosen.
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The score for a single round is the score for the shape you selected (1 for Rock, 2 for Paper, and 3 for Scissors)
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plus the score for the outcome of the round (0 if you lost, 3 if the round was a draw, and 6 if you won).
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"""
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def __init__(self, path: str):
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if not os.path.isfile(path):
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raise FileNotFoundError(f"File was not found or isn't a file: {path}")
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self.file_path = path
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def parse_file(self) -> List[Tuple[str, str]]:
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strategy_guide = []
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with open(self.file_path, "r") as file:
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for line in file:
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line = line.replace("\n", "")
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a, b = line.split(" ")
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strategy_guide.append((RPS.RPS_SYM_TO_SHAPE[a], RPS.RPS_SYM_TO_SHAPE[b]))
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return strategy_guide
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