day1

day01/index.mjs

@@ -0,0 +1,18 @@
+import * as readline from 'node:readline';
+import * as fs from 'node:fs';
+
+const rl = readline.createInterface({ 
+    input: fs.createReadStream('./input') 
+});
+
+let last = null;
+let counter = 0;
+
+for await (const line of rl) {
+    const v = parseInt(line, 10);
+    if (last !== null && v > last) counter++;
+    last = v;    
+}
+
+console.log(counter);
+