advent of code 2024 version unix - retour accueil
git clone git://bebou.netlib.re/aoc2024
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5.solve (591B)
1 #! /bin/sh
2
3 echo "part 1"
4
5 csplit 5.input /^$/ > /dev/null
6 orderfiles=xx00
7 manualpages=xx01
8 < $orderfiles sed -E 's/\|/.*/g' > rules
9 cat $manualpages | grep -v ^$ |
10 while read update;do
11 relevantrulesreg=$(echo "$update" |
12 grep -v ^$ |
13 sed 's/^/(/;s/$/)/p' |
14 tr ',' '|' |
15 paste -s -d '.' | sed 's/\./\\.\\*/' )
16 relevantrules=$(< rules grep -E "$relevantrulesreg")
17 greps=$(echo "$relevantrules" | sed -E 's/^/grep "/;s/$/"/' |
18 paste -s -d'|')
19 echo "$update" | eval $greps
20 done | awk -F',' '{mid=(NF+1)/2;print $mid}' | paste -s -d+ | bc
21
22 echo "part 2"
23
24 rm xx00 xx01
25