from utils import read_input
raw = read_input.read_input_strings('day21')
def parse_ingredients(line):
pass
def part_one():
pass
def part_two():
pass
if __name__ == '__main__':
part_one()
part_two()
from utils import read_input, regex
raw_rules = read_input.read_input_strings('day7')
def parse_rule(rule):
[in_bag, out_bags] = rule.split(' contain ')
in_color = regex.find_first_match(in_bag, r'(.*) bags?')
outs = []
for out_bag in out_bags[:-1].split(', '):
out = regex.find_all_match(out_bag, r'((\d+) (.*) bags?)')
if len(out) > 0:
[(_, number, color)] = out
outs.append((int(number), color))
return in_color, outs
rules = [parse_rule(rule) for rule in raw_rules]
def find_rules_by_out_color(out_color):
result = []
for rule in rules:
in_color, outs = rule
for (number, color) in outs:
if out_color == color:
result.append(rule)
return result
def find_rule_by_in_color(color):
from utils import read_input
import math
raw = read_input.read_input_strings('day18')
def evaluate_precedence(expression):
return math.prod([
sum([int(number) for number in group.split('+')])
for group in expression.split('*')
])
def evaluate_sequential(expression):
result = 0
pointer = 0
operator = '+'
numbers = []
while pointer < len(expression):
current = expression[pointer]
if current == '+' or current == '*':
if operator == '+':
result += int(''.join(numbers))
else:
result *= int(''.join(numbers))
operator = current
numbers.clear()
else:
numbers.append(current)
pointer += 1
if len(numbers) > 0:
from utils import read_input
raw_inputs = read_input.read_input_strings('day2')
def parse_password(raw):
[rule, password] = raw.split(': ')
[policy, char] = rule.split(' ')
[low, high] = policy.split('-')
return int(low), int(high), char, password
def is_password_valid(policy):
low, high, char, password = policy
count = len([c for c in password if c == char])
return low <= count <= high
def is_password_valid_new(policy):
pos1, pos2, char, password = policy
return (password[pos1 - 1] == char and password[pos2 - 1] != char) or\
(password[pos1 - 1] != char and password[pos2 - 1] == char)
def part_one():
result = len([p for p in raw_inputs if is_password_valid(parse_password(p))])
print(f'{result} passwords are valid.')
def part_two():
result = len([p for p in raw_inputs if is_password_valid_new(parse_password(p))])
