day 13 easy peasy

day13_transparent_origami/Cargo.toml

@@ -0,0 +1,8 @@
+[package]
+name = "day13_transparent_origami"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

day13_transparent_origami/day13.txt

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+
+fold along x=655
+fold along y=447
+fold along x=327
+fold along y=223
+fold along x=163
+fold along y=111
+fold along x=81
+fold along y=55
+fold along x=40
+fold along y=27
+fold along y=13
+fold along y=6

day13_transparent_origami/example.txt

@@ -0,0 +1,21 @@
+6,10
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+
+fold along y=7
+fold along x=5

day13_transparent_origami/input.txt

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+
+fold along x=655
+fold along y=447
+fold along x=327
+fold along y=223
+fold along x=163
+fold along y=111
+fold along x=81
+fold along y=55
+fold along x=40
+fold along y=27
+fold along y=13
+fold along y=6

day13_transparent_origami/main.py

@@ -0,0 +1,59 @@
+import os, sys
+import numpy as np
+
+task_dir = os.path.dirname(__file__)
+sys.path.append(f"{task_dir}/..")
+from get_tasks import get_input, check_example, generate_readme
+
+
+def folding(input: list[str]) -> tuple[int, np.ndarray]:
+    coords = np.array(
+        [
+            (line.split(",")[1], line.split(",")[0])
+            for line in input
+            if len(line) > 1 and len(line) < 12
+        ],
+        dtype=int,
+    )
+    instructions = [line[11:].split("=") for line in input if line.startswith("f")]
+    x, y = 0, 0
+    for os, c in instructions:
+        if os == "y":
+            x = int(c) * 2 + 1
+        if os == "x":
+            y = int(c) * 2 + 1
+        if x != 0 and y != 0:
+            paper = np.zeros((x, y), dtype=np.int8)
+            break
+    paper[coords[:, 0], coords[:, 1]] = 1
+    for step, (os, c) in enumerate(instructions):
+        if os == "y":
+            paper = paper[: int(c)] + np.flipud(paper[int(c) + 1 :])
+        if os == "x":
+            paper = paper[:, : int(c)] + np.fliplr(paper[:, int(c) + 1 :])
+        if step == 0:
+            part1 = np.where(paper > 0, 1, 0).sum()
+    part2 = np.where(paper > 0, "#", ".")
+    return part1, part2
+
+
+def part1(input: list[str]):
+    part1, _ = folding(input)
+    print("The anwer of part1 is:", part1)
+
+
+def part2(input: list[str]):
+    _, part2 = folding(input)
+    print("The answer of part2 is:\n")
+    for line in part2:
+        print("".join(line))
+
+
+if __name__ == "__main__":
+    input, example = get_input(task_dir, 13)
+
+    check_example(example, part1)
+    part1(input)
+    part2(input)
+
+    generate_readme(task_dir, 13)

day13_transparent_origami/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}