adding 2015 & 2025 advents

2025/01/JS/main.ts

@@ -0,0 +1,43 @@
+const input = await Deno.readTextFile("input.txt");
+const START = 50
+const TOTAL = 100
+
+function part1(){
+    let password = 0
+let current = START
+for (const rotation of input.split('\n')) {
+    const direction = rotation[0]
+    let amount = Number(rotation.slice(1))
+    if (direction === "L") {
+        amount *= -1
+    }
+    let change = current + amount
+    while (change < 0) {
+        change = TOTAL + change
+    }
+    current = change % TOTAL
+    if (current === 0) {
+        password += 1
+    }
+}
+
+console.log(password)
+}
+
+function part2(){
+    let password = 0
+let current = START
+for (const rotation of input.split('\n')) {
+    const direction = rotation[0]
+    let amount = Number(rotation.slice(1))
+    if (direction === "L") {
+        const divisions = Math.floor((amount * -1) / TOTAL * -1)
+        password += divisions
+    }
+}
+
+console.log(password)
+}
+
+//part1()
+part2()