Initial commit: AoC solutions 2023-2025

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

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

2023/12.py

@@ -0,0 +1,52 @@
+import numpy as np
+import itertools
+from itertools import groupby
+import timeit
+
+filename = "12-input.txt"
+
+def main():
+    with open(filename, "r") as file:
+        combinations = []
+        for line in file:
+            combinations.append(get_combinations(line))
+
+        print(sum(combinations))
+
+def get_combinations(line: str):
+    start_time = timeit.default_timer()
+    #print(f"Finding combinations for {line}")
+    split = line.split(" ")
+    springs = np.array(list(split[0]))
+
+    config = np.array(split[1].strip().split(",")).astype(int)
+    question_marks_indices = np.nonzero(springs == '?')[0]
+
+    all_combinations = []
+    combinations = itertools.product(['#', '.'], repeat=len(question_marks_indices))
+    for combination in combinations:
+        test_array = springs.copy()
+        for i, index in enumerate(question_marks_indices):
+            test_array[index] = combination[i]
+        if validate_combination(test_array, config):
+            all_combinations.append(test_array)
+
+    end_time = timeit.default_timer()
+
+    execution_time = end_time - start_time
+    print(f"combinations for {line} done in {execution_time} seconds. {len(all_combinations)} combinations found.")
+    return len(all_combinations)
+
+def validate_combination(springs: [], config: []):
+    hash_indices = np.nonzero(springs == '#')[0]
+    if len(hash_indices) != config.sum():
+        return False
+    groups = [list(group) for key, group in groupby(springs) if key == '#']
+    for i, group in enumerate(groups):
+        if len(group) != config[i]:
+            return False
+    return True
+
+
+if __name__ == "__main__":
+    main()