rename repo, subdir for yearly challenges

2021-07-25 11:17:46 +02:00
parent 1806f79e14
commit 4a2318edc9
203 changed files with 212 additions and 1 deletions
--- a/2020/day04/ex2.bash
+++ b/2020/day04/ex2.bash
@@ -0,0 +1,125 @@
+#!/bin/bash
+#
+# ex2.bash: Advent2020 game, day 4/game 2.
+
+CMD=${0##*/}
+shopt -s extglob
+
+declare -A KEYS=( ["byr"]="" ["iyr"]="" ["eyr"]="" ["hgt"]="" ["hcl"]="" ["ecl"]=""
+				  ["pid"]="" ["cid"]="" )
+NKEYS=${#KEYS[@]}
+
+function reset_array() {						  # reset array values
+	local -n array=${1}
+	local key
+
+	#echo before reset: ${KEYS[@]}
+	for key in "${!array[@]}"; do
+		array[$key]=""
+	done
+	#echo after reset: ${KEYS[@]}
+}
+
+# returns 1 if $1 length is $2
+function check_length() {
+	return $((${#1} != $2))
+}
+function check_digits() {
+	[[ "$1" =~ ^[[:digit:]]+$ ]] && return 0 || return 1
+}
+# returns 1 if $1 is between $2 and $3
+function check_range() {
+	(($1 >= $2 && $1 <= $3)) && return 0 || return 1
+}
+declare -A COLORS=( ["amb"]="" ["blu"]="" ["brn"]="" ["gry"]=""
+					["grn"]="" ["hzl"]="" ["oth"]="" )
+function check_eye() {
+	[[ -v COLORS["$1"] ]] && return 0 || return 1
+}
+function check_height() {
+	local -i ret=1
+	local val="$1" unit=${val: -2}
+	local num=${val%%$unit}
+
+	#printf "unit=%s hgt=%s\n" "$unit" "$num"
+	case "$unit" in
+		"cm") check_digits "$num" && check_range "$num" 150 193 && ret=0
+			;;
+		"in") check_digits "$num" && check_range "$num" 59 76 && ret=0
+			;;
+	esac
+	return $ret
+}
+function check_hair() {
+	[[ "$1" =~ ^#[a-f0-9]{6}$ ]] && return 0 || return 1
+}
+
+function check_key() {
+	local -i valid=0
+	local key="$1" val="${KEYS[$key]}"
+
+	#printf "KEY/VAL = %s=[%s]\n" "$key" "$val"
+	case "$key" in
+		cid) valid=1
+			 ;;
+		byr) check_digits "$val" &&
+				 check_length "$val" 4 &&
+				 check_range "$val" 1920 2002 && valid=1
+			 ;;
+		iyr) check_digits "$val" &&
+				   check_length "$val" 4 &&
+				   check_range "$val" 2010 2020 && valid=1
+			 ;;
+		eyr) check_digits "$val" &&
+				   check_length "$val" 4 &&
+				   check_range "$val" 2020 2030 && valid=1
+			 ;;
+		pid) check_digits "$val" &&
+				   check_length "$val" 9 && valid=1
+			 ;;
+		ecl) check_eye "$val" && valid=1
+			 ;;
+		hcl) check_hair "$val" && valid=1
+			 ;;
+		hgt) check_height "$val" && valid=1
+			 ;;
+		# TODO
+		*) valid=1
+		   ;;
+	esac
+	#printf "%s=[%s] : valid=%d\n" "$key" "$val" $valid
+	#[[ ! $key == "cid" ]] && [[ -z ${KEYS[$key]} ]] && valid=0 && break
+	return $valid
+}
+
+function passport_valid() {
+	local -i ret=0
+
+	for key in "${!KEYS[@]}"; do
+		#printf "current key: %s\n" "$key"
+		[[ $key != "cid" ]] && #[[ -z ${KEYS[$key]} ]] &&
+			check_key "$key" && ret=1 && break
+	done
+	return $ret
+}
+
+declare -i current=0 nvalids=0
+
+while read -r line; do
+	if [[ -z "$line" ]]; then
+		((current++))
+		passport_valid && ((nvalids ++))
+		reset_array KEYS
+		continue
+	fi
+	for pair in $line; do
+		key=${pair%%:*}
+		val=${pair##*:}
+		[[ -v KEYS[$key] ]] && KEYS[$key]="$val"  # valid key
+	done
+done
+((current++))
+passport_valid && ((nvalids ++))
+printf "%s : valid=%d/%d\n" "$CMD" "$nvalids" "$current"
+
+exit 0