day4 part2, and some cleanup

This commit is contained in:
Tyrel Souza 2024-12-04 10:19:43 -05:00
parent 2bcab64eff
commit be3fdad22b
4 changed files with 42 additions and 12 deletions

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@ -3,12 +3,15 @@ import shared
import itertools import itertools
import functools import functools
def is_increasing(sequence): def is_increasing(sequence):
return all(sequence[i] < sequence[i + 1] for i in range(len(sequence) - 1)) return all(sequence[i] < sequence[i + 1] for i in range(len(sequence) - 1))
def is_decreasing(sequence): def is_decreasing(sequence):
return all(sequence[i] > sequence[i + 1] for i in range(len(sequence) - 1)) return all(sequence[i] > sequence[i + 1] for i in range(len(sequence) - 1))
def parse_line(row): def parse_line(row):
for previous, current in zip(row, row[1:]): for previous, current in zip(row, row[1:]):
diff = abs(current - previous) diff = abs(current - previous)
@ -41,7 +44,6 @@ def brute_force(row):
return 0 return 0
# @shared.profile # @shared.profile
def part2(rows): def part2(rows):
rows = [list(map(int, row.split())) for row in rows] rows = [list(map(int, row.split())) for row in rows]

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@ -2,10 +2,11 @@ import shared
import re import re
from scanf import scanf from scanf import scanf
# @shared.profile # @shared.profile
def part1(rows): def part1(rows):
total = 0 total = 0
r = re.compile(r'mul\(\d+,\d+\)') r = re.compile(r"mul\(\d+,\d+\)")
for row in rows: for row in rows:
muls = r.findall(row) muls = r.findall(row)
for m in muls: for m in muls:
@ -14,11 +15,10 @@ def part1(rows):
print(total) print(total)
# @shared.profile # @shared.profile
def part2(rows): def part2(rows):
total = 0 total = 0
r = re.compile(r'(mul\(\d+,\d+\)|do\(\)|don\'t\(\))') r = re.compile(r"(mul\(\d+,\d+\)|do\(\)|don\'t\(\))")
enabled = True enabled = True
for row in rows: for row in rows:
muls = r.findall(row) muls = r.findall(row)

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@ -19,9 +19,34 @@ def part1(mx):
# @shared.profile # @shared.profile
def part2(rows): def part2(mx):
pass count = 0
for idr, row in enumerate(mx):
for idc, c in enumerate(row):
if c != "A":
continue
nb = matrix.get_neighbors_cardinal(mx, idc, idr, diagonals=True)
eastdown= []
for d in ("NW","SE"):
eastdown.append(nb.get(d, {}).get("value"))
if None in eastdown:
continue
eastdown = sorted(eastdown)
westdown = []
for d in ("NE", "SW"):
westdown.append(nb.get(d, {}).get("value"))
if None in westdown:
continue
westdown = sorted(westdown)
if eastdown == ['M','S'] and westdown == ['M', 'S']:
count += 1
print(count)
def main(): def main():
mx = matrix.load_matrix_file(shared.get_fname(4), str) mx = matrix.load_matrix_file(shared.get_fname(4), str)
@ -29,9 +54,9 @@ def main():
part1(mx) part1(mx)
print("🕒", elapsed()) print("🕒", elapsed())
rows = [row for row in shared.load_rows(4, True)] mx = matrix.load_matrix_file(shared.get_fname(4), str)
with shared.elapsed_timer() as elapsed: with shared.elapsed_timer() as elapsed:
part2(rows) part2(mx)
print("🕒", elapsed()) print("🕒", elapsed())

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@ -6,6 +6,7 @@ import functools
import pstats import pstats
from itertools import groupby from itertools import groupby
def all_equal(iterable): def all_equal(iterable):
g = groupby(iterable) g = groupby(iterable)
return next(g, True) and not next(g, False) return next(g, True) and not next(g, False)
@ -27,9 +28,11 @@ def profile(func):
return inner return inner
def spl(y): def spl(y):
return [int(w) for w in y] return [int(w) for w in y]
def minmax(l): def minmax(l):
return min(l), max(l) return min(l), max(l)