day 9 part 1 solution

2024/day-8/solution-2.sh

@@ -40,6 +40,7 @@ do
       while true
       do
         HEAD=$(( A - DIFF * HEADC ))
+	if [[ ${SHADOW_ARRAY[HEAD]} == "X" ]]; then (( HEADC++ )); continue ; fi
 	HEADVDIFF=$(( (A / LEN) - (HEAD / LEN) ))
         # Check if out of bounds
         if [[ $HEAD -lt ${#MAP_ARRAY[@]} ]] && \
@@ -57,6 +58,7 @@ do
       while true
       do
         TAIL=$(( B + DIFF * TAILC ))
+	if [[ ${SHADOW_ARRAY[TAIL]} == "X" ]]; then (( TAILC++ )); continue ; fi
 	TAILVDIFF=$(( (TAIL / LEN) - (B / LEN) ))
         # Check if out of bounds
         if [[ $TAIL -lt ${#MAP_ARRAY[@]} ]] && \
@@ -75,6 +77,6 @@ do
   unset IDX_ARRAY
 
 done
-printf "%s" "${SHADOW_ARRAY[@]}" | fold -w "$LEN" | sed -E 's/(.)/\1\ /g'
-printf "\n"
+#printf "%s" "${SHADOW_ARRAY[@]}" | fold -w "$LEN" | sed -E 's/(.)/\1\ /g'
+#printf "\n"
 printf "%s" "${SHADOW_ARRAY[@]}" | grep -o 'X' | wc -l