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# -*- coding: utf-8 -*-
from abc import ABC
from collections import OrderedDict
from typing import Iterator, List
from aoc import BaseAssignment, I, T
class Assignment(BaseAssignment[int, int], ABC):
def parse_item(self, item: str) -> int:
return int(item)
class AssignmentOne(Assignment):
example_result = 3
@staticmethod
def move(items: List[int], item: int):
items = list(items)
input_size = len(items)
index = items.index(item)
item = items.pop(index)
new_index = (index + item) % input_size
if item > 0 and index + item >= input_size:
new_index += 1
if item < 0 and index + item <= 0:
new_index -= 1
if new_index == -1:
new_index = len(items)
items.insert(new_index, item)
return items
@staticmethod
def get_nth_number_after_0(items: List[int], n: int):
index_of_0 = items.index(0)
return items[(index_of_0 + n) % len(items)]
def run(self, input: Iterator[I]) -> T:
input_list = list(input)
working_list = list(input_list)
for index, item in enumerate(input_list):
working_list = self.move(working_list, item)
return sum(
[
self.get_nth_number_after_0(working_list, 1000),
self.get_nth_number_after_0(working_list, 2000),
self.get_nth_number_after_0(working_list, 3000),
]
)
class AssignmentTwo(Assignment):
pass
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