Day 25 Part 1

2024/25/index.ts

@@ -0,0 +1,44 @@
+const fs = require('fs');
+
+const input = fs.readFileSync(__dirname + '/input.txt', 'utf8');
+
+const keyLocks = input.split("\n\n");
+
+const keys: number[][] = [];
+const locks: number[][] = [];
+
+keyLocks.forEach((s: string) => {
+    const rows = s.split("\n");
+    const isKey = rows[0] === '.....';
+    const columns: number[] = [-1, -1, -1, -1, -1];
+    rows.forEach((row: string) => {
+        for (let i = 0; i < row.length; i++) {
+            if (row[i] === '#') {
+                columns[i]++;
+            }
+        }
+    });
+    if (isKey) {
+        keys.push(columns);
+    } else {
+        locks.push(columns);
+    }
+});
+
+let matches = 0;
+
+for (let lock of locks) {
+    keyLoop:
+    for (let key of keys) {
+        for (let i in lock) {
+            if (lock[i] + key[i] >= 6) {
+                continue keyLoop;
+            }
+        }
+        matches++;
+    }
+}
+
+console.log(locks);
+console.log(keys);
+console.log(matches);