2021.22.1

challenges/2021/22.js

@@ -0,0 +1,37 @@
+// Part 1
+const solvePuzzle1 = (input) => {
+  input = parseInput(input);
+  const cuboids = parseCuboids(input);
+  const on = new Set();
+
+  cuboids.forEach((cuboid, idx) => {
+    const [x1, x2, y1, y2, z1, z2] = cuboid;
+    if (Math.max(...[x1, x2, y1, y2, z1, z2].map(Math.abs)) <= 50) {
+      for (let x = x1; x <= x2; x++) {
+        for (let y = y1; y <= y2; y++) {
+          for (let z = z1; z <= z2; z++) {
+            if (input[idx][1] === "n") {
+              on.add(`${x},${y},${z}`);
+            } else {
+              on.delete(`${x},${y},${z}`);
+            }
+          }
+        }
+      }
+    }
+  });
+
+  return on.size;
+};
+
+const parseInput = (input) => input.split("\n");
+const parseCuboids = (input) =>
+  input.map((l) =>
+    l
+      .split(",")
+      .map((c) => c.split("=")[1].split(".."))
+      .flat()
+      .map(Number)
+  );
+
+require(__dirname + "/../../utils/test.js").test(__filename, __dirname, solvePuzzle1);