Day 22

22/01.sh

@@ -0,0 +1,45 @@
+#!/bin/bash
+
+declare -A cores
+for ((i=-50;i<=50;i++)); do
+  for ((j=-50;j<=50;j++)); do
+    for ((k=-50;k<=50;k++)); do
+      cores[$i,$j,$k]=0
+    done
+  done
+done
+
+while read line; do
+  if [[ ${line:0:2} == "on" ]]; then
+    new_value=1
+  else
+    new_value=0
+  fi
+  t=${line#*x=}
+  t=${t%%,*}
+  x_1=${t%\.\.*}
+  x_2=${t#*\.\.}
+  t=${line#*y=}
+  t=${t%%,*}
+  y_1=${t%\.\.*}
+  y_2=${t#*\.\.}
+  t=${line#*z=}
+  t=${t%%,*}
+  z_1=${t%\.\.*}
+  z_2=${t#*\.\.}
+
+  if [ $x_1 -lt -50 ] || [ $x_2 -gt 50 ] || [ $y_1 -lt -50 ] || [ $y_2 -gt 50 ] \
+          || [ $z_1 -lt -50 ] || [ $z_2 -gt 50 ]; then
+    continue
+  fi
+
+  for ((x=x_1;x<=x_2;x++)); do
+    for ((y=y_1;y<=y_2;y++)); do
+      for ((z=z_1;z<=z_2;z++)); do
+        cores[$x,$y,$z]=$new_value
+      done
+    done
+  done
+done
+
+echo $(( $(sed 's/ /+/g' <<< ${cores[@]}) ))