2024: day 11. part 1. python

Author: Tsovak

src/2024/day11/1/data.txt

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+4022724 951333 0 21633 5857 97 702 6

src/2024/day11/1/solution.py

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+import os
+
+
+def read_lines() -> list[str]:
+    filename = os.path.join(os.path.dirname(os.path.abspath(__file__)), 'data.txt')
+    with open(filename, "rb") as f:
+        return [line.decode("utf-8").strip() for line in f.readlines()]
+
+
+def blinking(numbers: list[int], n: int) -> list[int]:
+    def split(number: int) -> list[int]:
+        if number == 0:
+            return [1]
+
+        number_str = str(number)
+        if len(number_str) % 2 == 0:
+            half = len(number_str) // 2
+            return [int(number_str[:half]), int(number_str[half:])]
+
+        return [number * 2024]
+
+    if n == 0:
+        return numbers
+
+    new_numbers = []
+    for _, v in enumerate(numbers):
+        new_numbers.extend(split(v))
+
+    return blinking(new_numbers, n - 1)
+
+
+lines = read_lines()
+numbers = [int(num) for num in lines[0].split(' ')]
+
+result = blinking(numbers, 25)
+print(len(result))