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Simplify 2023 day 13

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augustin64 2023-12-14 07:06:55 +01:00
parent 7ba400e86d
commit dc7f9bb764
1 changed files with 13 additions and 57 deletions
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64
2023/day13.py
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@ -12,64 +12,13 @@ def read_sample():
sample = [ [[k for k in j] for j in i.split('\n') if j != ''] for i in sample if i != '' ]
return sample
def eq(sample, i, j, transp=False):
if not transp:
if sample[i] == sample[j]:
return 0
return sum([1 for k in range(len(sample[0])) if sample[i][k] != sample[j][k]])
sm = 0
for k in range(len(sample)):
if sample[k][i] != sample[k][j]:
sm += 1
return sm
def find_reflections(pattern, smudge=0):
reflections = []
for i in range(0, len(pattern)): # is line i first of refl ?
sm = 0
for j in range(i+1):
if i-j >= 0 and i+j-1 < len(pattern):
sm += eq(pattern, i-j, i+j-1)
if sm == smudge:
reflections.append((0, i))
break
for i in range(0, len(pattern[0])): # is col i first of refl ?
sm = 0
for j in range(i+1):
if i-j >= 0 and i+j-1 < len(pattern[0]):
sm += eq(pattern, i-j, i+j-1, transp=True)
if sm == smudge:
reflections.append((1, i))
break
return reflections
def score(refls):
sum = 0
for j in refls:
if j[0] == 1:
sum += j[1]
else:
sum += j[1]*100
return sum
def part1(sample):
"""Partie 1 du défi"""
refls = [score(find_reflections(i)) for i in sample]
return sum(refls)
def part2(sample):
"""Partie 2 du défi"""
def diff(line1, line2):
def diff(line1, line2):
return sum([1 for i in range(len(line1)) if line1[i] != line2[i]])
def transpose(pattern):
def transpose(pattern):
return [[pattern[j][i] for j in range(len(pattern))] for i in range(len(pattern[0]))]
def h_reflects(pattern, smudge=1):
def h_reflects(pattern, smudge=0):
nb = 0
for i in range(len(pattern)):
total_diff = sum((diff(pattern[i-j], pattern[i+j-1]) for j in range(len(pattern[0])) if i-j >= 0 and i+j-1 < len(pattern) and i+j-1 > 0 and i-j < i+j-1))
@ -77,8 +26,15 @@ def part2(sample):
nb += i
return nb
def part1(sample):
"""Partie 1 du défi"""
return sum((h_reflects(pattern) for pattern in sample))*100 + sum((h_reflects(transpose(pattern)) for pattern in sample))
def part2(sample):
"""Partie 2 du défi"""
return sum((h_reflects(pattern, smudge=1) for pattern in sample))*100 + sum((h_reflects(transpose(pattern), smudge=1) for pattern in sample))
def main():
"""Fonction principale"""