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Solve day9 part 2
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2 changed files with 39 additions and 3 deletions
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@ -87,9 +87,37 @@ def solve_part_1(instructions: DataType) -> int:
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def solve_part_2(instructions: DataType) -> int:
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return 0
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head = Point()
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tails = [Point() for _ in range(9)]
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visited = set()
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for instruction in instructions:
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print(instruction)
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count = instruction[1]
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while count > 0:
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head.move(instruction)
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tails[0].follow(head)
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for i in range(1, len(tails)):
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tails[i].follow(tails[i - 1])
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tail_tuple = tails[-1].tuple
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visited.add(tail_tuple)
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count -= 1
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# print_grid([head, *tails])
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return len(visited)
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def print_grid(rope: list[Point], size: tuple[int, int] = (21, 27)) -> None:
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rope = [knot.tuple for knot in rope]
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for row in range(int(-size[0] / 2), int(size[0] / 2)):
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for col in range(int(-size[1] / 2), int(size[1] / 2)):
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try:
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char = rope.index((col, row))
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except ValueError:
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char = "."
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print(char, end="")
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print()
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if __name__ == "__main__":
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main("inputs/day09-test1", expected_part_1=13)
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main("inputs/day09", expected_part_1=5619)
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main("inputs/day09-test1", expected_part_1=13, expected_part_2=1)
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main("inputs/day09-test2", expected_part_2=36)
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main("inputs/day09", expected_part_1=5619, expected_part_2=2376)
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8
2022/inputs/day09-test2
Normal file
8
2022/inputs/day09-test2
Normal file
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@ -0,0 +1,8 @@
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R 5
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U 8
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L 8
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D 3
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R 17
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D 10
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L 25
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U 20
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