2022 day 2 (bash)

2022/day02/aoc.bash

@@ -0,0 +1,42 @@
+#!/usr/bin/env bash
+#
+# aoc.bash: Advent of Code 2022, day 1
+#
+# Copyright (C) 2022 Bruno Raoult ("br")
+# Licensed under the GNU General Public License v3.0 or later.
+# Some rights reserved. See COPYING.
+#
+# You should have received a copy of the GNU General Public License along with this
+# program. If not, see <https://www.gnu.org/licenses/gpl-3.0-standalone.html>.
+#
+# SPDX-License-Identifier: GPL-3.0-or-later <https://spdx.org/licenses/GPL-3.0-or-later.html>
+
+. common.bash
+
+declare -A outcome=(                              # shape is known
+    [A X]=$((3+1)) [A Y]=$((6+2)) [A Z]=$((0+3))
+    [B X]=$((0+1)) [B Y]=$((3+2)) [B Z]=$((6+3))
+    [C X]=$((6+1)) [C Y]=$((0+2)) [C Z]=$((3+3))
+)
+declare -A outcome2=(                              # result is known
+    [A X]=$((0+3)) [A Y]=$((3+1)) [A Z]=$((6+2))
+    [B X]=$((0+1)) [B Y]=$((3+2)) [B Z]=$((6+3))
+    [C X]=$((0+2)) [C Y]=$((3+3)) [C Z]=$((6+1))
+)
+declare -a tot
+
+parse() {
+    local input
+
+    while read -r input; do
+        (( tot[1] += outcome[$input] ))
+        (( tot[2] += outcome2[$input] ))
+    done
+}
+
+solve() {
+    res="${tot[$1]}"
+}
+
+main "$@"
+exit 0