def knot_hash(s: str):
const = 17, 31, 73, 47, 23
input_lens = [ord(e) for e in s.strip()]
input_lens.extend(const)
d = range(256)
total_rotation = 0
for i in range(64):
d, cur_rotation = apply_rotations(d, input_lens, len(input_lens) * i)
total_rotation += cur_rotation
d.rotate(-total_rotation)
res = [hex(reduce(xor, c)) for c in U.chunks(d, 16)]
return ''.join(h[-2:] for h in res).replace('x', '0')
def parse_test_data():
return [
Debug.from_strings(lines)
for lines in chunks(read_file('16.first', 2018), 4)
]
def aoc8_b():
pixels = (first(dropwhile(lambda v: v == 2, pixel_vals)) for pixel_vals in zip(*layers))
letters = cycle('\u2588')
return [''.join(next(letters) if v else ' ' for v in row) for row in U.chunks(pixels, width)]
from collections import Counter
from itertools import dropwhile, cycle
from operator import itemgetter
from cytoolz import first
import pyaoc2019.utils as U
__author__ = 'acushner'
data = [int(v) for v in first(U.read_file('08'))]
width = 25
height = 6
layer_size = width * height
layers = list(U.chunks(data, layer_size))
def aoc8_a():
least_zeroes = min((Counter(l) for l in layers), key=itemgetter(0))
return least_zeroes[1] * least_zeroes[2]
def aoc8_b():
pixels = (first(dropwhile(lambda v: v == 2, pixel_vals)) for pixel_vals in zip(*layers))
letters = cycle('\u2588')
return [''.join(next(letters) if v else ' ' for v in row) for row in U.chunks(pixels, width)]
def __main():
print(aoc8_a())
print()
def aoc03_b(triangles):
by_column = zip(*triangles)
triangles = chunks(chain.from_iterable(by_column), 3)
return aoc03_a(triangles)
def _reassemble(chunks):
size = math.isqrt(len(chunks))
return [
''.join(words) for c in U.chunks(chunks, size)
for words in zip(*(s.split('/') for s in c))
]
def _stitch(tiles: dict):
res = []
for ts in chunks(tiles.values(), 5):
res.extend(reduce(add, (t[r] for t in ts)) for r in range(len(ts[0])))
return res