rename repo, subdir for yearly challenges

2020/day01/ex2.bash

@@ -0,0 +1,24 @@
+#!/bin/bash
+#
+# ex2.bash: Advent2020 game, day 1/game 2
+
+CMD=$(basename "$0")
+
+readarray -t numbers
+
+declare -i i j k
+
+for ((i=0; i<${#numbers[@]}; ++i)); do
+	for ((j=i+1; j<${#numbers[@]}; ++j)); do
+		for ((k=j+1; k<${#numbers[@]}; ++k)); do
+			if ((numbers[i] + numbers[j] + numbers[k] == 2020)); then
+				printf "${CMD} : %d:%d %d:%d %d:%d sum=%d mul=%d\n" \
+				   $i $((numbers[i])) $j $((numbers[j])) $k $((numbers[k])) \
+				   $((numbers[i]+numbers[j]+numbers[k])) \
+				   $((numbers[i]*numbers[j]*numbers[k]))
+				break 3
+			fi
+		done
+	done
+done
+exit 0