feat: Redo of the AoC repo starting over with 2015 and keeping up with

2025 (completed day 2 so far)
This commit is contained in:
2025-12-02 07:55:08 -06:00
commit c936d7d573
29 changed files with 668 additions and 0 deletions

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'''AoC 2025 Day 1'''
import math
def turn_dial(curr_pos: int, instruction: str) -> int:
'''Turn dial from current position to the new one'''
direction, amount = process_instruction(instruction)
new_pos = (curr_pos + (direction * amount)) % 100
return new_pos
def check_cross_zero(curr_pos: int, instruction: str) -> int:
'''Check for if the instruction crosses 0 and lands on it'''
direction, amount = process_instruction(instruction)
total_zeros = 0
if direction == 1 and curr_pos + amount >= 100:
total_zeros += math.floor((curr_pos + amount) / 100)
if direction == -1 and curr_pos - amount <= 0:
total_zeros += math.floor(abs((curr_pos - amount) / 100))
if curr_pos != 0:
total_zeros += 1
return total_zeros
def process_instruction(instruction: str) -> (int, int):
'''Returns the direction and amount of the turn'''
direction = -1 if instruction[0] == 'L' else 1
amount = int(instruction[1:])
return direction, amount
def main():
'''Entrypoint'''
curr_pos = 50
num_zero = 0
crossing_zero = 0
with open('input.txt', encoding='utf-8') as fh:
for line in fh:
crossing_zero += check_cross_zero(curr_pos, line.strip())
curr_pos = turn_dial(curr_pos, line.strip())
if curr_pos == 0:
num_zero += 1
print(f'Part1: {num_zero}')
print(f'Part2: {crossing_zero}')
if __name__ == "__main__":
main()

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'''testing'''
import pytest
from main import turn_dial, check_cross_zero
@pytest.mark.parametrize('current, given, expected',
[
(50, 'L68', 82),
(82, 'L30', 52),
(52, 'R48', 0),
(0, 'L5', 95),
(95, 'R60', 55),
(55, 'L55', 0),
(0, 'L1', 99),
(99, 'L99', 0),
(0, 'R14', 14),
(14, 'L82', 32),
(50, 'R1000', 50),
(50, 'L1000', 50)
])
def test_matching_zero(current, given, expected):
assert turn_dial(current, given) == expected
@pytest.mark.parametrize('current, given, expected',
[
(50, 'L68', 1),
(82, 'L30', 0),
(52, 'R48', 1),
(0, 'L5', 0),
(95, 'R60', 1),
(55, 'L55', 1),
(0, 'L1', 0),
(99, 'L99', 1),
(0, 'R14', 0),
(14, 'L82', 1),
(50, 'R1000', 10),
(50, 'L1000', 10)
])
def test_crossing_zero(current, given, expected):
assert check_cross_zero(current, given) == expected

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'''AoC Day 2'''
import re
def part1(range_list: list) -> int:
'''Part 1'''
total = 0
for id_range in range_list:
for x in range(int(id_range[0]), int(id_range[1]) + 1):
if not check_valid_id(str(x)):
total += x
return total
def part2(range_list: list) -> int:
'''Part 2'''
total = 0
for id_range in range_list:
for x in range(int(id_range[0]), int(id_range[1]) + 1):
if not check_extended_id(str(x)):
total += x
return total
def check_valid_id(id: str) -> bool:
'''Checks a given ID for validity using the silly rules'''
return re.fullmatch(r'(.*?)\1', id) is None
def check_extended_id(id: str) -> bool:
'''Checks for extended rule checking, at least two repeats'''
return re.fullmatch(r'(.*?)\1+', id) is None
def main():
'''Entrypoint'''
with open('input.txt', encoding='utf-8') as fh:
range_list = [(y[0].strip(), y[1].strip()) for y in (x.split('-') for x in fh.readline().split(','))]
total = part1(range_list)
print(f'Part1: {total}')
total2 = part2(range_list)
print(f'Part2: {total2}')
if __name__ == "__main__":
main()

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import pytest
from main import check_valid_id, check_extended_id, part1, part2
@pytest.mark.parametrize('given, expected',
[
('1', True),
('11', False),
('12', True),
('22', False),
('1010', False),
('1012', True),
('1188511885', False),
('222222', False),
('446446', False),
('565656', True),
('446447', True),
('38593859', False),
('385385385', True)
])
def test_check_valid_id(given, expected):
assert check_valid_id(given) == expected
@pytest.mark.parametrize('given, expected',
[
('1', True),
('12', True),
('1012', True),
('446447', True),
('11', False),
('22', False),
('99', False),
('111', False),
('999', False),
('1010', False),
('1188511885', False),
('222222', False),
('446446', False),
('565656', False),
('38593859', False),
('385385385', False),
('824824824', False),
('2121212121', False)
])
def test_extended_valid_id(given, expected):
assert check_extended_id(given) == expected
@pytest.mark.parametrize('given, expected',
[
(
[
('11', '22'),
('95', '115'),
('998', '1012'),
('1188511880', '1188511890'),
('222220', '222224'),
('1698522', '1698528'),
('446443', '446449'),
('38593856', '38593862')
],
1227775554
)
])
def test_part1_examples(given, expected):
assert part1(given) == expected
@pytest.mark.parametrize('given, expected',
[
(
[
('11', '22'),
('95', '115'),
('998', '1012'),
('1188511880', '1188511890'),
('222220', '222224'),
('1698522', '1698528'),
('446443', '446449'),
('38593856', '38593862'),
('565653', '565659'),
('824824821', '824824827'),
('2121212118', '2121212124')
],
4174379265
)
])
def test_part2_examples(given, expected):
assert part2(given) == expected