74 lines
1.5 KiB
Bash
Executable File
74 lines
1.5 KiB
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# ex1.bash: Advent2020 game, day 20/game 1.
|
|
|
|
CMD=${0##*/}
|
|
set -o noglob
|
|
shopt -s extglob
|
|
|
|
#declare -A strings
|
|
declare -a strings T R B L RT RR RB RL nums
|
|
|
|
declare -i count=-1
|
|
while read -r line; do
|
|
case ${line:0:1} in
|
|
T*)
|
|
((count++))
|
|
num=${line##* }
|
|
num=${num%%:}
|
|
nums+=("$num")
|
|
;;
|
|
\#|.)
|
|
strings[$count]="${strings[$count]} $line"
|
|
;;
|
|
esac
|
|
done
|
|
((count--))
|
|
|
|
for key in "${!nums[@]}"; do
|
|
# shellcheck disable=SC2206
|
|
str=(${strings[$key]})
|
|
top="${str[0]}"
|
|
bottom="${str[9]}"
|
|
T+=("$top")
|
|
B+=("$bottom")
|
|
# find out right and bottom
|
|
unset left right
|
|
for ((i=0; i<10; ++i)); do
|
|
left+=${str[$i]:0:1}
|
|
right+=${str[$i]: -1:1}
|
|
done
|
|
R+=("$right")
|
|
L+=("$left")
|
|
unset fliptop flipbottom flipleft flipright
|
|
for ((i=9; i>=0; --i)); do
|
|
fliptop+=${top:$i:1}
|
|
flipbottom+=${bottom:$i:1}
|
|
flipleft+=${left:$i:1}
|
|
flipright+=${right:$i:1}
|
|
done
|
|
RT+=("$fliptop")
|
|
RR+=("$flipright")
|
|
RB+=("$flipbottom")
|
|
RL+=("$flipleft")
|
|
|
|
done
|
|
|
|
ALL=("${T[@]}" "${R[@]}" "${B[@]}" "${L[@]}" "${RT[@]}" "${RR[@]}" "${RB[@]}" "${RL[@]}")
|
|
declare -i res=1 count
|
|
for ((i=0; i<${#nums[@]}; ++i)); do
|
|
count=0
|
|
|
|
for t in ${T[$i]} ${R[$i]} ${B[$i]} ${L[$i]}; do
|
|
for s in "${ALL[@]}"; do
|
|
[[ $t == "$s" ]] && ((count++))
|
|
done
|
|
done
|
|
|
|
((count ==6)) && ((res*=${nums[$i]}))
|
|
done
|
|
|
|
printf "%s : res=%d\n" "$CMD" "$res"
|
|
|
|
exit 0
|