1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
|
# -*- coding: utf-8 -*-
import re
from abc import ABC
from typing import Iterator
from aoc import BaseAssignment, I, T
class Assignment(BaseAssignment, ABC):
@classmethod
def parse_item(cls, item: str) -> Iterator[range]:
for r in item.split(","):
[start, end] = r.split("-")
yield range(int(start), int(end) + 1)
def find_invalid_ids(self, item: range) -> Iterator[int]:
raise NotImplementedError()
def run(self, input: Iterator[range]) -> int:
totals = 0
for item in input:
totals += sum(self.find_invalid_ids(item))
return totals
class AssignmentOne(Assignment):
example_result = 1227775554
@classmethod
def find_invalid_ids(cls, item: range):
for i in item:
i_str = str(i)
if i_str[: len(i_str) // 2] == i_str[len(i_str) // 2 :]:
yield i
class AssignmentTwo(Assignment):
example_result = 4174379265
@classmethod
def is_invalid_id(cls, item: str) -> bool:
for i in range(1, (len(item) // 2) + 1):
pattern = item[:i]
rest = item[i:]
if re.match(rf"({pattern})+$", rest):
return True
return False
@classmethod
def find_invalid_ids(cls, item: range):
for i in item:
i_str = str(i)
if AssignmentTwo.is_invalid_id(i_str):
yield i
|
