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2024, day 6, part 1 (StopIteration)
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‎2024/data/day06.txt

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‎2024/day06.py

Lines changed: 24 additions & 16 deletions
Original file line numberDiff line numberDiff line change
@@ -31,7 +31,7 @@ def parse(lines):
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for x, content in enumerate(row)
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if content == "#"
3333
]
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visited = 0
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visited = set()
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return Grid(current, heading, obstacles, visited)
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@@ -56,17 +56,33 @@ def visualize(obstacles, nxt, heading):
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def walk(grid):
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"""Walk one step and simulate the new state of the grid"""
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current, heading, obstacles, visited = grid
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visited.add(current)
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# visualize(obstacles, current, heading)
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if next_step(current, heading) in obstacles:
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print("turning")
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heading = turn_right(heading)
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nxt = next_step(current, heading)
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visited += 1
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print(nxt, heading, visited)
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visualize(obstacles, nxt, heading)
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print()
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# print(current, nxt, heading, visited)
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# print()
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return Grid(nxt, heading, obstacles, visited)
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def visit(map):
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lines = [list(line) for line in map.strip().splitlines()]
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max_y = len(lines)
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max_x = len(lines[0])
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grid = parse(lines)
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while (0 <= grid.current[0] <= max_x) and (0 <= grid.current[1] <= max_y):
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grid = walk(grid)
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return len(grid.visited) - 1
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def main(part: int = 1) -> int:
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with open("2024/data/day05.txt") as f:
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map = f.read()
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return visit(map)
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if __name__ == "__main__":
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map = """
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....#.....
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#.........
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......#..."""
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# repeat(50, walk, parse(map))
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lines = [list(line) for line in map.strip().splitlines()]
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max_y = len(lines)
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max_x = len(lines[0])
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grid = parse(lines)
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walking = True
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while walking:
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grid = walk(grid)
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if not (0 <= grid.current[0] <= max_x) or not (0 <= grid.current[1] <= max_y):
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walking = False
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print(grid.visited)
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assert visit(map) == 41
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print(main())

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