rename repo, subdir for yearly challenges

2020/day06/ex1-bis.bash

@@ -0,0 +1,73 @@
+#!/bin/bash
+#
+# ex1.bash: Advent2020 game, day 6/game 1.
+
+CMD=${0##*/}
+shopt -s extglob
+declare -a Q=()
+
+printf -v AC "%d" "'a"
+printf -v ZC "%d" "'z"
+(( NC = ZC-AC+1 ))
+
+function reset_array() {
+	Q=()
+	#for (( elt=AC; elt<=ZC; ++elt )); do
+	#	Q[$elt]=0
+	#done
+}
+function count_array() {
+	#local -i count
+	echo ${#Q[@]}
+	#for ${!Q[@]}; do
+	#	((Q[elt] > 0)) && ((count++))
+	#	#printf "%d=%d (%d)" "$elt" "${Q[$elt]}" "$count"
+	#done
+	#echo $count
+}
+
+function set_array() {
+	local str="$1"
+	local c asc
+
+	for ((i=0; i<${#str}; ++i)); do
+		c=${str:$i:1}
+		if [[ "$c" =~ [a-z] ]]; then
+			printf -v asc "%d" "'$c"
+			Q[$asc]=1
+		fi
+	done
+}
+
+declare -i people=0 group=0 count=0
+declare line grouped
+function calcgroup() {
+	set_array "$grouped"
+	((group++))
+	i=$(count_array)
+	#printf "c=%d" $i
+	((count += i))
+	((people=0))
+	grouped=""
+	reset_array
+}
+
+while read -r line; do
+	if [[ -z "$line" ]]; then
+		#echo "G=$grouped"
+		#set_array "$grouped"
+		calcgroup
+		#for (( elt=AC; elt<=ZC; ++elt )); do
+			#printf "%s=%s " "$elt" "${Q[$elt]}"
+		#done
+		#echo
+		continue
+	fi
+	((people++))
+	grouped+="$line"
+done
+calcgroup
+
+printf "%s : groups=%d count=%d\n" "$CMD" $group $count
+
+exit 0