56 lines
774 B
Bash
Executable File
56 lines
774 B
Bash
Executable File
#!/bin/bash
|
|
#
|
|
# ex1.bash: Advent2020 game, day 6/game 1.
|
|
|
|
CMD=${0##*/}
|
|
shopt -s extglob
|
|
declare -A Q=()
|
|
|
|
function reset_array() {
|
|
for elt in {a..z}; do
|
|
Q[$elt]=0
|
|
done
|
|
}
|
|
function count_array() {
|
|
local -i count
|
|
for elt in "${!Q[@]}"; do
|
|
(( Q[$elt] > 0 )) && ((count++))
|
|
done
|
|
echo $count
|
|
}
|
|
|
|
function set_array() {
|
|
local str="$1"
|
|
local c
|
|
|
|
for ((i=0; i<${#str}; ++i)); do
|
|
c=${str:$i:1}
|
|
if [[ "$c" =~ [a-z] ]]; then
|
|
Q[$c]=1
|
|
fi
|
|
done
|
|
}
|
|
|
|
declare -i people=0 group=0 count=0
|
|
|
|
function calcgroup() {
|
|
((group++))
|
|
((count += $(count_array)))
|
|
((people=0))
|
|
reset_array
|
|
}
|
|
|
|
while read -r line; do
|
|
if [[ -z "$line" ]]; then
|
|
calcgroup
|
|
continue
|
|
fi
|
|
((people++))
|
|
set_array "$line"
|
|
done
|
|
calcgroup
|
|
|
|
printf "%s : groups=%d count=%d\n" "$CMD" $group $count
|
|
|
|
exit 0
|