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2023/day11/p1/input.text

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2023/day11/p1/main.py

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+import math
+import copy
+INPUT_FILE = "test.text"
+
+class Point:
+    x: int
+    y: int
+
+    def __init__(self, x: int , y: int):
+        self.x = x
+        self.y = y
+
+    def add(self, other):
+        return Point(self.x + other.x, self.y + other.y)
+
+    def __add__(self, other):
+        return Point(self.x + other.x, self.y + other.y)
+
+    def __sub__(self, other):
+        return Point(self.x - other.x, self.y - other.x)
+
+    def __str__(self) -> str:
+        return f'P({self.x}, {self.y})'
+
+    def __eq__(self, other) -> bool:
+        return self.x == other.x and self.y == other.y
+
+    def _length(self) -> float:
+        return math.sqrt(self.x ** 2 + self.y ** 2)
+
+    def normalise(self) -> None:
+        self.x /= self._length()
+        self.y /= self._length()
+
+def distance(p1: Point, p2: Point) -> int:
+    return math.sqrt((p2.x - p1.x) ** 2 + (p2.y - p1.y) ** 2)
+
+def main():
+
+    with open(INPUT_FILE, 'r') as file:
+        universe = file.readlines()
+
+    # Shave off the newlines
+    for i in range(0, len(universe)):
+        # print(universe[i])
+        universe[i] = universe[i][:-1]
+        # print(universe[i])
+
+    expanded_universe: list[str] = universe.copy()
+    added_rows = 0
+    # Expand it!
+    for y in range(0, len(universe)):
+        row: str = universe[y]
+
+        # If no galaxies found in row
+        if row.find('#') == -1:
+            expanded_universe.insert(y + added_rows, row)
+            added_rows += 1
+
+    # for r in expanded_universe:
+    #         print(r)
+
+    # print()
+
+    row_n = len(expanded_universe)
+    added_cols = 0
+    for column_i in range(0, len(expanded_universe[0])):
+        no_galaxy = True
+
+        for y in range(0, row_n):
+            if expanded_universe[y][column_i + added_cols] == '#':
+                no_galaxy = False
+                break
+
+        if no_galaxy:
+            for y in range(0, row_n):
+                l = list(expanded_universe[y])
+                l.insert(column_i + added_cols, '.')
+                expanded_universe[y] = ''.join(l)
+            added_cols += 1
+
+
+    # for r in expanded_universe:
+    #     print(r)
+
+    # now find lengths or something
+
+    # oh but first find galaxies
+    galaxies: list[Point] = []
+    universe = expanded_universe
+    n_y = len(universe)
+
+    for y in range(0, n_y):
+        row = universe[y]
+
+        for x in range(0, len(row)):
+            if row[x] == '#':
+                galaxies.append(Point(x, y))
+
+    for p in galaxies:
+        print(p)
+
+    # ok now find lengths or something
+    total = 0
+    g1_i = 0
+    for g1 in galaxies:
+
+        # print(g1)
+
+        g2_i = 0
+        for g2 in galaxies:
+            steps = 0
+
+            t = copy.copy(g1)
+            # Get steps
+            while t != g2:
+                if t.x < g2.x:
+                    t.x += 1
+                    steps += 1
+                elif t.x > g2.x:
+                    t.x -= 1
+                    steps += 1
+                if t.y < g2.y:
+                    t.y += 1
+                    steps += 1
+                elif t.y > g2.y:
+                    t.y -= 1
+                    steps += 1
+
+                # if g1 == Point(5, 11):
+                #     print(f't {t} g2 {g2}')
+
+            total += steps
+            # print(f'{steps} from g{g1} to g{g2}')
+            g2_i += 1
+        g1_i += 1
+
+
+
+    print(f'Sum is {total/2}')
+
+
+
+
+
+if __name__ == '__main__':
+    main()

2023/day11/p1/test.text

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+...#......
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+#.........
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+#...#.....