Advent of Code 2024 Day 3 - Bash

aoc_2024_d3_solve1.sh

#!/bin/bash
# cat input.txt | ./solve1.sh

grep -Po 'mul\(\d+,\d+\)' |
    sed -r 's/^mul\(([0-9]+),([0-9]+)\)$/\1*\2/' |
    xargs |
    sed -e 's/\ /+/g' |
    xargs -I @@ bash -c 'echo $((@@))'

aoc_2024_d3_solve2.sh

#!/bin/bash
# cat input.txt | ./solve2.sh

grep -Po "(mul\(\d+,\d+\))|(do\(\))|(don't\(\))" |
    tr -d "'" |
    xargs |
    while read -r orig; do
        echo "$orig" |
            grep -Po 'dont\(\) .*?do\(\)' |
            while read -r rm; do
                echo "$rm" |
                    grep -Po 'mul\(\d+,\d+\)' |
                    sed -r 's/^mul\(([0-9]+),([0-9]+)\)$/\1*\2/' |
                    xargs |
                    sed -e 's/\ /+/g' |
                    xargs -I @@ bash -c 'echo $((@@))'
            done |
                paste -sd- - |
                while read -r sub; do
                    echo "$orig" |
                    grep -Po 'mul\(\d+,\d+\)' |
                        sed -r 's/^mul\(([0-9]+),([0-9]+)\)$/\1*\2/' |
                        xargs |
                        sed -e 's/\ /+/g' |
                        xargs -I @@ bash -c 'echo $((@@))' |
                    while read -r sum; do
                        echo $(("$sum-$sub"))
                    done
                done
    done

example1.txt

xmul(2,4)%&mul[3,7]!@^do_not_mul(5,5)+mul(32,64]then(mul(11,8)mul(8,5))

example2.txt

xmul(2,4)&mul[3,7]!^don't()_mul(5,5)+mul(32,64](mul(11,8)undo()?mul(8,5))