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day13: no need to join, just to split again afterwards ...

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This commit is contained in:
Stefan Harmuth 2021-12-13 07:03:00 +01:00
parent eb62a58f20
commit 1fd5b27944
1 changed files with 11 additions and 12 deletions
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23
day13.py
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@ -1,13 +1,12 @@
from tools.aoc import AOCDay
from typing import Any
from tools.coordinate import Coordinate
from tools.grid import Grid
from typing import Any, List
def buildGrid(coords: str) -> Grid:
def buildGrid(coords: List[str]) -> Grid:
grid = Grid(0)
for c in coords.split(";"):
for c in coords:
x, y = map(int, c.split(","))
grid.set(Coordinate(x, y), 1)
@ -18,13 +17,13 @@ def fold(grid: Grid, direction: str, axis: int):
if direction == "y":
for y in range(axis + 1, grid.maxY + 1):
targetY = axis - (y - axis)
for x in range(grid.minX, grid.maxX + 1):
for x in grid.rangeX():
grid.add(Coordinate(x, targetY), grid.get(Coordinate(x, y)))
grid.maxY = axis - 1
elif direction == "x":
for x in range(axis + 1, grid.maxX + 1):
targetX = axis - (x - axis)
for y in range(grid.minY, grid.maxY + 1):
for y in grid.rangeY():
grid.add(Coordinate(targetX, y), grid.get(Coordinate(x, y)))
grid.maxX = axis - 1
@ -34,24 +33,24 @@ class Day(AOCDay):
test_solutions_p2 = []
def part1(self) -> Any:
coords, folds = self.getMultiLineInputAsArray(join_char=";")
coords, folds = self.getMultiLineInputAsArray()
grid = buildGrid(coords)
fold_1 = folds.split(";")[0]
fold_1 = folds[0]
direction, axis = fold_1.split()[-1].split("=")
fold(grid, direction, int(axis))
onCount = 0
for x in range(grid.minX, grid.maxX + 1):
for y in range(grid.minY, grid.maxY + 1):
for x in grid.rangeX():
for y in grid.rangeY():
onCount += grid.get(Coordinate(x, y)) > 0
return onCount
def part2(self) -> Any:
coords, folds = self.getMultiLineInputAsArray(join_char=";")
coords, folds = self.getMultiLineInputAsArray()
grid = buildGrid(coords)
for thisFold in folds.split(";"):
for thisFold in folds:
direction, axis = thisFold.split()[-1].split("=")
fold(grid, direction, int(axis))