Day 10

10/01.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+score=0
+while read line; do
+  chars=( $(sed 's/\(.\)/\1 /g' <<< $line) )
+  opened_chars=()
+  for char in ${chars[@]}; do
+    case $char in
+      '('|'['|'{'|'<')
+        opened_chars+=( $char );;
+      ')')
+	if [ ${opened_chars[-1]} = '(' ]; then
+	  unset 'opened_chars[-1]'
+	else
+	  score=$((score+3))
+	  break
+	fi;;
+      ']')
+	if [ ${opened_chars[-1]} = '[' ]; then
+	  unset 'opened_chars[-1]'
+	else
+	  score=$((score+57))
+	  break
+	fi;;
+      '}')
+	if [ ${opened_chars[-1]} = '{' ]; then
+	  unset 'opened_chars[-1]'
+	else
+	  score=$((score+1197))
+	  break
+	fi;;
+      '>')
+	if [ ${opened_chars[-1]} = '<' ]; then
+	  unset 'opened_chars[-1]'
+	else
+	  score=$((score+25137))
+	  break
+	fi;;
+    esac
+  done
+done
+echo $score