aoc/day-0/sol.sh
2022-12-01 00:00:23 -07:00

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#!/bin/bash
# USAGE: ./sol.sh (n: top elves)
NUM_ELVES=${1:-3}
declare -a ELVES=()
for (( i = 0; i<$NUM_ELVES; i++))
do
ELVES+=(0)
done
add_to_elves () {
local max=$1
for (( i = 0; i<${NUM_ELVES}; i++));
do
local tmp="${ELVES[$i]}";
if [[ $max -ge $tmp ]];
then
ELVES[$i]=$max
max=$tmp
fi
done
}
CURRENT_ELF=0
while read -r line
do
if [[ -z "$line" ]];
then
add_to_elves $CURRENT_ELF
CURRENT_ELF=0
else
CURRENT_ELF=$((CURRENT_ELF+line))
fi
done < input
echo "MAX ELF = ${ELVES[0]}"
echo "sum(TOP $NUM_ELVES ELVES) = $(printf "%s\n" $(echo "${ELVES[*]}") | paste -sd+ - | bc)"