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13.py
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13.py
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DEBUG = 1
N = [chunk.splitlines() for chunk in open(
'./in/13.test.txt').read().split('\n\n')]
N = [chunk.splitlines() for chunk in open('./in/13.txt').read().split('\n\n')]
def col(chunk, j):
return [row[j] for row in chunk]
def part_1():
# assuming no frame has both v and h reflection
t = 0
# checking for h is easier
for _, chunk in enumerate(N):
H = len(chunk)
W = len(chunk[0])
DEBUG and print('Chunk', _)
for i in range(H - 1):
if chunk[i] == chunk[i + 1]:
DEBUG and print(
f'Rows {i} and {i + 1} match! starting a search...')
for above, below in zip(range(i - 1, -1, -1), range(i + 2, H)):
if chunk[above] != chunk[below]:
DEBUG and print(
f'Not a match: rows {above} and {below}')
break
else:
DEBUG and print('H-match!')
t += 100 * (i + 1)
break
else:
DEBUG and print('\nNo h-matches, now checking for v')
for j in range(W - 1):
if col(chunk, j) == col(chunk, j + 1):
DEBUG and print(
f"Cols {j} and {j + 1} match! starting a search...")
for left, right in zip(range(j - 1, -1, -1), range(j + 2, W)):
if col(chunk, left) != col(chunk, right):
DEBUG and print(
f'Not a match: cols {left} and {right}')
break
else:
DEBUG and print('V-match!')
t += j + 1
break
DEBUG and print()
return t
def part_2():
pass
if __name__ == '__main__':
print('--- Part 1 ---')
print(part_1())
print('\n--- Part 2 ---')
print(part_2())