From 8b8e8e053ef8031cbba8a8409a714bfa3196651f Mon Sep 17 00:00:00 2001 From: Thomas Voss Date: Fri, 3 Dec 2021 07:07:50 +0100 Subject: Add day 3 solutions --- 2021/03/input | 1000 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2021/03/puzzle-1.awk | 22 ++ 2021/03/puzzle-2.py | 30 ++ 3 files changed, 1052 insertions(+) create mode 100644 2021/03/input create mode 100755 2021/03/puzzle-1.awk create mode 100755 2021/03/puzzle-2.py diff --git a/2021/03/input b/2021/03/input new file mode 100644 index 0000000..c95ddb3 --- /dev/null +++ b/2021/03/input @@ -0,0 +1,1000 @@ +010100110111 +101001010000 +101011110010 +100100011101 +101000011000 +110011011110 +111010010100 +001111100000 +111101100001 +100010101110 +101101110101 +010010101110 +111001110100 +000101111000 +111101111100 +000010001100 +101010111101 +001010011011 +001101101101 +000000110100 +001100101011 +110110110010 +001110000011 +011001111001 +110100110011 +011000110001 +111100100010 +101011000000 +011101000111 +011111000111 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> o[i] ? "0" : "1") + e = e (z[i] < o[i] ? "0" : "1") + } + (cmd = "echo 'ibase = 2;" g "*" e "' | bc") | getline out + close(cmd) + print out +} diff --git a/2021/03/puzzle-2.py b/2021/03/puzzle-2.py new file mode 100755 index 0000000..c5ae894 --- /dev/null +++ b/2021/03/puzzle-2.py @@ -0,0 +1,30 @@ +#!/usr/bin/env python3 + +from copy import deepcopy +from typing import Callable + + +def solve(lines: list[str], comp: Callable[[int, int], bool]) -> int: + while True: + for i in range(len(lines[0])): + if len(lines) == 1: + return int(lines[0], 2) + + ones = len([line for line in lines if line[i] == "1"]) + zeros = len([line for line in lines if line[i] == "0"]) + + if comp(zeros, ones): + lines = [line for line in lines if line[i] == "0"] + else: + lines = [line for line in lines if line[i] == "1"] + + +def main() -> None: + with open("input", "r", encoding="utf-8") as f: + data = [l.strip() for l in f.readlines()] + + print(solve(deepcopy(data), lambda x, y: x > y) * solve(data, lambda x, y: x <= y)) + + +if __name__ == "__main__": + main() -- cgit v1.2.3