days 1-5

01/main.js

@@ -0,0 +1,16 @@
+const fs = require("fs")
+
+const input = fs.readFileSync("input.txt", "utf-8", err => {
+    err && console.error(err)
+}).split("\n").map(num => parseInt(num))
+
+let partOne = 0, partTwo = 0
+
+for (let i = 0; i < input.length; i++){
+    if (input[i - 1] && input[i] > input[i - 1])
+        partOne++
+    if (input[i - 3] && input[i] > input[i - 3])
+        partTwo++
+}
+
+console.log(partOne, partTwo)