From b3e2e79505a613eee9d4811741ecb379f722bb71 Mon Sep 17 00:00:00 2001 From: Curtis McEnroe Date: Sun, 2 Dec 2018 00:28:46 -0500 Subject: Solve day 2 part 1 --- 2018/day02-1.sh | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) create mode 100644 2018/day02-1.sh diff --git a/2018/day02-1.sh b/2018/day02-1.sh new file mode 100644 index 0000000..695959f --- /dev/null +++ b/2018/day02-1.sh @@ -0,0 +1,19 @@ +alpha='a b c d e f g h i j k l m n o p q r s t u v w x y z' +twos() { + for a in $alpha; do + tr -c -d "$a\n" < $1 \ + | grep -n '^..$' \ + | cut -d ':' -f 1 + done | sort -u | wc -l +} +threes() { + for a in $alpha; do + tr -c -d "$a\n" < $1 \ + | grep -n '^...$' \ + | cut -d ':' -f 1 + done | sort -u | wc -l +} +input=$(mktemp) +cat > $input +echo $(( $(twos $input) * $(threes $input) )) +rm $input -- cgit 1.4.1