Initial commit: AoC solutions 2023-2025

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

2025/day01.py

@@ -0,0 +1,62 @@
+"""Day 1: Advent of Code 2025."""
+
+from aoc import read_lines, read_input
+    
+def get_pointer(dial, move, pointer):
+    dir = move[0]
+    n = int(move[1:])
+    if dir == 'L':
+        pointer = (pointer - n) % len(dial)
+    elif dir == 'R':
+        pointer = (pointer + n) % len(dial)
+    return dial[pointer]
+
+def part1(data):
+    dial = range(100)
+    password = 0
+    pointer = 50
+    for line in data:
+        move = line.strip()
+        pointer = get_pointer(dial, move, pointer)
+        if pointer == 0:
+            password += 1
+
+    return password
+
+def get_new_index(dial, move, pointer):
+    dir = move[0]
+    n = int(move[1:])
+    if dir == 'L':
+        pointer = (pointer - n)
+    elif dir == 'R':
+        pointer = (pointer + n)
+    return pointer
+
+def part2(data):
+    dial = range(100)
+    password = 0
+    pointer = 50
+    for line in data:
+        move = line.strip()
+        if len(move[1:]) > 2:
+            n = int(move[1:][:-2])
+            move = move[0] + move[-2:]
+            password += n
+        
+        idx = get_new_index(dial, move, pointer)
+        if pointer != 0 and (idx < 0 or idx > len(dial)):
+            password += 1
+        pointer = idx % len(dial)
+        if pointer == 0:
+            password += 1
+        
+
+    return password
+
+
+
+if __name__ == "__main__":
+    data = read_lines(1)  # or read_input(1), read_ints(1), read_grid(1)
+
+    print(f"Part 1: {part1(data)}")
+    print(f"Part 2: {part2(data)}")