(update) day 1

2025/01/main.py

@@ -0,0 +1,56 @@
+#!/bin/env python3
+
+# 0-99
+MAX_NUMBERS = 100
+START_AT = 50
+with open("example", "+r") as file:
+    hit_zero = 0
+    position = START_AT
+    for line in file.readlines():
+        # print(line)
+        amount = int(line[1:])
+        direction = line[0]
+
+        no_rotations = int(amount / MAX_NUMBERS)
+        remaining = amount - no_rotations * MAX_NUMBERS
+        position = position - remaining if direction == "L" else position + remaining
+
+        if position < 0:
+            position = MAX_NUMBERS + position
+
+        if position >= MAX_NUMBERS:
+            position = position - MAX_NUMBERS
+
+        if position == 0:
+            hit_zero = hit_zero + 1
+
+        print(f"The dial is rotated {direction}{amount} to point at {position}")
+
+    print(f"hit 0 {hit_zero} times.")
+
+
+with open("input", "+r") as file:
+    hit_zero = 0
+    position = START_AT
+    for line in file.readlines():
+        previous_position = position
+        amount = int(line[1:])
+        clockwise = True if line[0] == "R" else False
+
+        rotations = int(amount / MAX_NUMBERS)
+        remaining = amount - rotations * MAX_NUMBERS
+        position = position + remaining if clockwise else position - remaining
+        if (position <= 0 or position >= MAX_NUMBERS) and previous_position != 0:
+            rotations = rotations + 1
+        if position < 0:
+            position = MAX_NUMBERS + position
+
+        if position >= MAX_NUMBERS:
+            position = position - MAX_NUMBERS
+        hit_zero = hit_zero + rotations
+
+        print(
+            f'dial rotated {rotations}x {"clockwise" if clockwise else "counter-clockwise"} from {previous_position} to {position} ({amount})'
+        )
+
+    print(f"hit 0 {hit_zero} times.")