Day 11 [Part 1]

11/part1.js

@@ -0,0 +1,43 @@
+const { readFileSync } = require("fs");
+// Parse Input
+const inputFile = "input.txt";
+const input = readFileSync(inputFile)
+  .toString()
+  .trim()
+  .split(" ")
+  .map((x) => parseInt(x));
+
+function splitNumber(num) {
+  const str = num.toString();
+  const half = str.length / 2;
+  const firstPart = str.slice(0, half);
+  const secondPart = str.slice(half);
+  return [parseInt(firstPart), parseInt(secondPart)];
+}
+
+function tick() {
+  let toApply = [];
+  input.forEach((e, i) => {
+    if (e == 0) input[i] = 1;
+    else if (e.toString().split("").length % 2 == 0) {
+      let parts = splitNumber(e);
+      input[i] = parts[0];
+      toApply.push([i + 1, parts[1]]);
+    } else {
+      input[i] = e * 2024;
+    }
+  });
+
+  toApply.forEach((e) => {
+    input.splice(e[0], 0, e[1]);
+  });
+}
+
+for (let i = 0; i < 25; i++) {
+  process.stdout.write(
+    `Tick : ${i + 1}/${25}. Current Result : ${input.length}\r`
+  );
+  tick();
+}
+
+console.log("\n", input.length);