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50 lines
1.5 KiB
Python
50 lines
1.5 KiB
Python
"""AOC Day 2"""
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import pathlib
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import time
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import re
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def read_input(input_path: str) -> list:
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"""take input file path and return appropriate data structure"""
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with open(input_path, 'r') as input_file:
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rules = list()
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for entry in input_file.readlines():
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splitted = re.split('-| |: ', entry)
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rule = [int(splitted[0]), int(splitted[1]), splitted[2], splitted[3]]
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rules.append(rule)
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return rules
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def part1(entries: list) -> int:
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"""part1 solver take a list of tuples and return an int"""
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correct_passwords = 0
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for entry in entries:
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occurrences = entry[3].count(entry[2])
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if occurrences in range(entry[0], entry[1]+1):
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correct_passwords += 1
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return correct_passwords
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def part2(entries: list) -> int:
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"""part2 solver take a list of tuples and return an int"""
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correct_passwords = 0
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for entry in entries:
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pos_1, pos_2, letter, password = entry[:]
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if (password[pos_1-1] == letter) != (password[pos_2-1] == letter):
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correct_passwords += 1
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return correct_passwords
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def main():
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"""main function"""
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input_path = str(pathlib.Path(__file__).resolve().parent.parent) + "/inputs/" + str(pathlib.Path(__file__).stem)
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entries = read_input(input_path)
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start_time = time.time()
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print("Part 1: %d" % part1(entries))
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print("Part 2: %d" % part2(entries))
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end_time = time.time()
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print("Execution time: %f" % (end_time-start_time))
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if __name__ == "__main__":
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main()
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