63 lines
2.0 KiB
Python
63 lines
2.0 KiB
Python
def parse_card_data(line):
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"""Parse a single line of card data into card number, winning numbers, and own numbers."""
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try:
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card_info, number_parts = line.split(":")
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winning_part, own_part = number_parts.split("|")
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card_number = "".join(filter(str.isdigit, card_info))
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winning_numbers = set(map(int, winning_part.split()))
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own_numbers = list(map(int, own_part.split()))
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return int(card_number), winning_numbers, own_numbers
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except ValueError as e:
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raise ValueError(f"Error parsing line '{line}': {e}")
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def calculate_matches(winning_numbers, own_numbers):
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"""Calculate the number of matches for a single card."""
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return sum(1 for number in own_numbers if number in winning_numbers)
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def process_cards(file_path):
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"""Process all cards in the given file and return the total number of cards."""
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with open(file_path, "r") as file:
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cards = [parse_card_data(line.strip()) for line in file]
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i = 0
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while i < len(cards):
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card_number, winning_numbers, own_numbers = cards[i]
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matches = calculate_matches(winning_numbers, own_numbers)
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for _ in range(matches):
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if card_number + 1 < len(cards):
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cards.append(cards[card_number])
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card_number += 1
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i += 1
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return len(cards)
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def test():
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"""Run tests using the test.txt file."""
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expected_result = 30 # Based on the given example
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result = process_cards("../test.txt")
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assert (
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result == expected_result
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), f"Test failed: Expected {expected_result}, got {result}"
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print(f"Test passed: {result} cards")
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def main():
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"""Main function to process the input file and display results."""
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try:
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# Run tests first
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test()
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# Process actual input
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total_cards = process_cards("../input.txt")
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print(f"Total cards from input.txt: {total_cards}")
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except Exception as e:
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print(f"An error occurred: {e}")
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if __name__ == "__main__":
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main()
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