diff --git a/solutions/11/README.md b/solutions/11/README.md new file mode 100644 index 0000000..5c03cff --- /dev/null +++ b/solutions/11/README.md @@ -0,0 +1,12 @@ +# 11 + +Today: Game of life, but a bit different :) +I lost so much time because I missed that in the second part we now require 5 instead of 4 occupied seats 😩 + +
+ Solutions +
    +
  1. 2296
    2. +
  2. 2089
    3. +
+
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+LLLL.LL.LLLLLLL.L.LLLLLL.LLLLL.LLLLLLLLLLLLL.LLLLLLLLLLLLLLLLLL.LLLLL.LLLLLLL.LLLLL.LLLLLLLLLLLLL +LLLLLLLLLLL.LLLLL.LLLLLL.LLLLLLLLLLLLL..LLLLLLLLLLLLLLLLLLLLLLL.LL.LLLLLLLLLL.LLLLL.LLLLLLLLLLLLL +LLLLLLLLLLL.LLLLLLLLLLLLLLL.LL.LLLLLLLL..LLL.LLLLLLLLL.LLLLLLLLLLL.LLLLLLLLLL.LLLLL.LLLLLLLLLLLLL diff --git a/solutions/11/python/main.py b/solutions/11/python/main.py new file mode 100644 index 0000000..75b6e7d --- /dev/null +++ b/solutions/11/python/main.py @@ -0,0 +1,99 @@ +from os.path import join, dirname +from typing import List, Optional +from itertools import product +from copy import deepcopy + +TSeats = List[List[Optional[bool]]] + +mapping = { + '.': None, + '#': True, + 'L': False +} +inv = {v: k for k, v in mapping.items()} + + +class Seats: + p = [-1, 0, 1] + + def __init__(self, plan: str, alt: bool = False) -> None: + self.seats: TSeats = [ + [ + mapping[seat] + for seat in row + ] + for row in plan.strip().split('\n') + ] + self.max_x = len(self.seats[0]) + self.max_y = len(self.seats) + self.alt = alt + + def __str__(self) -> str: + return '\n'.join([ + ''.join([inv[seat] for seat in row]) + for row in self.seats + ]) + + def find_next_in_direction(self, y: int, x: int, dy: int, dx: int) -> Optional[bool]: + y += dy + x += dx + while 0 <= x < self.max_x and 0 <= y < self.max_y: + cur = self.seats[y][x] + if cur is not None: + return cur + y += dy + x += dx + return None + + def get_occupied(self, y: int, x: int,) -> int: + occupied = 0 + for dx, dy in product(self.p, self.p): + if dx == 0 and dy == 0: + continue + if self.alt and self.find_next_in_direction(y, x, dy, dx) == True: + occupied += 1 + else: + dx += x + dy += y + if 0 <= dx < self.max_x and 0 <= dy < self.max_y and self.seats[dy][dx]: + occupied += 1 + return occupied + + def iteration(self) -> int: + changed = 0 + future: TSeats = deepcopy(self.seats) + required_to_leave = 4 if self.alt else 3 + for y, x in product(range(self.max_y), range(self.max_x)): + current = self.seats[y][x] + if current == None: + continue + occupied = self.get_occupied(y, x) + if (current == True and occupied > required_to_leave) or (current == False and occupied == 0): + future[y][x] = not current + changed += 1 + self.seats = future + return changed + + def count_occupied(self) -> int: + return sum([ + sum([ + 1 if seat == True else 0 + for seat in row + ]) + for row in self.seats + ]) + + def find_equilibrium(self) -> int: + while self.iteration() > 0: + pass + return self.count_occupied() + + +data = join(dirname(__file__), '../data.txt') +with open(data) as f: + txt = f.read() + seats = Seats(txt) + print(seats.find_equilibrium()) + + seats = Seats(txt, True) + print(seats.find_equilibrium()) diff --git a/solutions/11/test.txt b/solutions/11/test.txt new file mode 100644 index 0000000..1beaede --- /dev/null +++ b/solutions/11/test.txt @@ -0,0 +1,10 @@ +L.LL.LL.LL +LLLLLLL.LL +L.L.L..L.. +LLLL.LL.LL +L.LL.LL.LL +L.LLLLL.LL +..L.L..... +LLLLLLLLLL +L.LLLLLL.L +L.LLLLL.LL