advent-of-code/2016-python2
Anders Englöf Ytterström 39e09dd36e Solve 2016:19 p1-2 "An Elephant Named Joseph"
Learned a lot about the Josephus' Problem today!

Solved part 1 by using a dict, but eventually
ended up just adding the mathematical shortcut
and rewriting both parts to use deque() for
performance.

Part 2 was tricky, since k (the elf to remove
after all presents were stolen from them) is a
index that changes over time. No tries for a
solution that was performant enough using lists
and dicts were succesfull, so by inspiration from
the subreddit the final solution code is based on
2 deque() that pops and appends between them.

There are 2 part 1 solutions.

- A correct implementation of the Josephus' Problem,
  using deque(). Recursion would have worked as well,
  but Python do not like recursions.
- The mathematical superior version, with a link
  to the Youtube video were it is introduced.
2024-12-12 13:53:43 +01:00
..
output Solve 2016:19 p1-2 "An Elephant Named Joseph" 2024-12-12 13:53:43 +01:00
aoc.py Improve aoc helper script 2024-12-12 13:53:43 +01:00
README.md Solve 2016:13 p1-2 "A Maze of Twisty Little Cubicles" 2024-12-12 13:53:43 +01:00

Advent of Code 2016

Solutions for #aoc2016 in Python 3 (3.12.7).

Setup

Since I want to remember, this is what was used to solve the puzzles.

  • Lenovo Thinkpad x260 laptop with Arch Linux.
  • Hyprland with gBar.
  • Editor: Zed.
  • Terminal: Alacritty.

Help scripts

Display all solved puzzles:

python aoc.py

To bootstrap a new puzzle (creates input/<day_no>.txt and output/day_<day_no>.py):

python aoc.py <day_no> <puzzle_name>

Manually copy the puzzle input from https://adventofcode.com and paste it in input/<day_no>.txt to start coding.

wl-paste > input/<day_no>.txt

Solve separate puzzle (replace XX with the puzzle number):

python -m output.day_XX

Solve separate puzzle using stdin (replace XX with the puzzle number):

wl-paste | python -m output.day_XX
cat tmpfile | python -m output.day_XX

Execute separate puzzle on file save (replace XX with the puzzle number):

ls output/*.py | entr -c -s 'wlpaste | python -m output.day_XX'
ls output/*.py | entr -c -s 'cat tmpfile | python -m output.day_XX'
ls output/*.py | entr -c -r python -m output.day_XX

(requires entr and wl-paste, Mac users can instead use pbpaste. If you prefer X at Linux, use xclip -selection clipboard -o).

To lint files:

ls output/*.py | entr -r -c flake8 output --ignore=E741,E501,E203