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aoc/2024/day01/part2.sh
2025-12-01 11:25:06 +01:00

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if test -f cleaned_input.txt; then
INPUT=$(cat cleaned_input.txt)
else
INPUT="3 4\n4 3\n2 5\n1 3\n3 9\n3 3"
fi
L1=$(printf "%b" "$INPUT" | awk '{print $1}' | sort -n)
L2=$(printf "%b" "$INPUT" | awk '{print $2}' | sort -n)
L1_ARRAY=($L1)
L2_ARRAY=($L2)
SUM=0
for i in ${!L1_ARRAY[@]}; do
for j in ${!L2_ARRAY[@]}; do
if [ "${L1_ARRAY[$i]}" = "${L2_ARRAY[$j]}" ]; then
SUM=$(( $SUM + ${L1_ARRAY[$i]} ))
fi
done
done
echo $SUM