Day 2 part 2

2024/Day_02/part_2.js

@@ -8,16 +8,27 @@ const __dirname = path.dirname(fileURLToPath(import.meta.url));
 // = Copyright (c) NullDev = //
 // ========================= //
 
-const INPUT = String(fs.readFileSync(path.join(__dirname, "input.txt"))).trim().split("\n");
+const INPUT = String(fs.readFileSync(path.join(__dirname, "input.txt"))).trim().split("\n").filter(Boolean);
 
 const pStart = performance.now();
 
-//
-// YOUR CODE HERE
-//
-const result = "...";
+const res = INPUT.filter(
+    (line, _, __, levels = line.split(" ").map(str => Number(str)),
+    ) => levels.every((level, i, arr) =>
+        i === 0 ||
+        (Math.abs(level - arr[i - 1]) >= 1 &&
+        Math.abs(level - arr[i - 1]) <= 3 &&
+        ((arr[1] - arr[0]) < 0 ? level <= arr[i - 1] : level >= arr[i - 1])),
+    ) || levels.some((___, i, arr) =>
+        arr.filter((____, j) => i !== j).every((level, k, newArr) =>
+            k === 0 ||
+            (Math.abs(level - newArr[k - 1]) >= 1 &&
+            Math.abs(level - newArr[k - 1]) <= 3 &&
+            ((newArr[1] - newArr[0]) < 0 ? level <= newArr[k - 1] : level >= newArr[k - 1])),
+        ),
+    )).length;
 
 const pEnd = performance.now();
 
-console.log("<DESCRIPTION>: " + result);
+console.log("NEW SAFE REPORTS: " + res);
 console.log(pEnd - pStart);

README.md

@@ -124,7 +124,7 @@ I also tried to experiment with a couple of different things:
 
 **2024** <a name="best-2024"></a>
 
-- One-Liner in [Day_02/part_1.js](https://github.com/NullDev/Advent-of-Code/blob/master/2024/Day_04/part_1.js)
+- One-Liner in [Day_02/part_1.js](https://github.com/NullDev/Advent-of-Code/blob/master/2024/Day_02/part_1.js) and [Day_02/part_2.js](https://github.com/NullDev/Advent-of-Code/blob/master/2024/Day_02/part_2.js)
 
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