From c1cf34491a65156df667e6d690350f3fae5b0c31 Mon Sep 17 00:00:00 2001 From: Luke Hubmayer-Werner Date: Tue, 13 Dec 2022 16:13:12 +1030 Subject: [PATCH] 2022 Day 13 Python --- 2022/day13.py | 44 +++++ 2022/helpers.py | 2 + 2022/input/13 | 449 ++++++++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 495 insertions(+) create mode 100644 2022/day13.py create mode 100644 2022/input/13 diff --git a/2022/day13.py b/2022/day13.py new file mode 100644 index 0000000..ae77436 --- /dev/null +++ b/2022/day13.py @@ -0,0 +1,44 @@ +from helpers import * +list_pairs = [[eval(l) for l in pair.split('\n')] for pair in read_day(day).split('\n\n')] + +def compare_lists(l1, l2) -> int: + for e1, e2 in zip(l1, l2): + if isinstance(e1, int): + if isinstance(e2, int): + if e1 < e2: + return -1 + if e1 > e2: + return 1 + else: + comp = compare_lists([e1], e2) + if comp != 0: + return comp + else: # e1 list + if isinstance(e2, int): + comp = compare_lists(e1, [e2]) + if comp != 0: + return comp + else: + comp = compare_lists(e1, e2) + if comp != 0: + return comp + # At this point, lists are equal elementwise up to the smaller list + if len(l1) > len(l2): + return 1 + elif len(l1) < len(l2): + return -1 + else: + return 0 + +def count_ordered_pairs(list_pairs): + return sum((i for i, (l1, l2) in enumerate(list_pairs, 1) if compare_lists(l1, l2) == -1)) + +def sort_all_and_find_dividers(list_pairs): + spacers = [[[2]], [[6]]] + flat = [l for ls in list_pairs + [spacers] for l in ls] + flat.sort(key=cmp_to_key(compare_lists)) + return prod((flat.index(spacer) + 1 for spacer in spacers)) + + +print(f'Part 1: {count_ordered_pairs(list_pairs)}') +print(f'Part 2: {sort_all_and_find_dividers(list_pairs)}') diff --git a/2022/helpers.py b/2022/helpers.py index 0795d4a..a8d9301 100644 --- a/2022/helpers.py +++ b/2022/helpers.py @@ -1,5 +1,7 @@ from numpy.typing import ArrayLike import numpy as np +from functools import cmp_to_key +from math import prod import re import requests import sys diff --git a/2022/input/13 b/2022/input/13 new file mode 100644 index 0000000..0bd78e3 --- /dev/null +++ b/2022/input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