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Day 13 - minor cleanups

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This commit is contained in:
Stefan Harmuth 2023-12-13 15:02:03 +01:00
parent 62b041bc0c
commit 425b190332
1 changed files with 13 additions and 17 deletions
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30
day13.py
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@ -7,31 +7,33 @@ from typing import Any
def get_reflection_value(grid: Grid, ignore: int = 0) -> int:
# search horizontal
for x in grid.rangeX():
nx = x + 1
col = grid.get_column(x)
if col == grid.get_column(x + 1):
if col == grid.get_column(nx):
match = True
for dx in range(1, grid.maxX - x):
if x - dx < 0:
break
if grid.get_column(x - dx) != grid.get_column(x + dx + 1):
if grid.get_column(x - dx) != grid.get_column(nx + dx):
match = False
break
if match and x + 1 != ignore:
return x + 1
if match and nx != ignore:
return nx
# search vertical
for y in grid.rangeY():
ny = y + 1
row = grid.get_row(y)
if row == grid.get_row(y + 1):
if row == grid.get_row(ny):
match = True
for dy in range(1, grid.maxY - y):
if y - dy < 0:
break
if grid.get_row(y - dy) != grid.get_row(y + dy + 1):
if grid.get_row(y - dy) != grid.get_row(ny + dy):
match = False
break
if match and 100 * (y + 1) != ignore:
return 100 * (y + 1)
if match and 100 * ny != ignore:
return 100 * ny
return -1
@ -60,16 +62,13 @@ class Day(AOCDay):
def part2(self) -> Any:
grids = self.parse_input()
ref_value = 0
for i, grid in enumerate(grids):
for grid in grids:
orig_ref = get_reflection_value(grid)
found = False
for x in grid.rangeX():
for y in grid.rangeY():
c = Coordinate(x, y)
if grid.get(c) == "#":
grid.set(c, ".")
else:
grid.set(c, "#")
grid.set(c, "." if grid.get(c) == "#" else "#")
v = get_reflection_value(grid, orig_ref)
if v > 0:
@ -77,10 +76,7 @@ class Day(AOCDay):
found = True
break
if grid.get(c) == "#":
grid.set(c, ".")
else:
grid.set(c, "#")
grid.set(c, "." if grid.get(c) == "#" else "#")
if found:
break