Working part 1

2024/day-10/solution-1.sh

@@ -73,36 +73,40 @@ get_nine () {
       COMBINATIONS+=( "$INDEX" )
     fi
   fi
-  printf "Get: %s \n" "$GET_NUM" >&2
-  printf "trail: %s \n" "$TRAIL" >&2
-  printf "neighbors found : %s \n" "${COMBINATIONS[@]}" >&2
+  #PRINT1=$( printf "%s " "$TRAIL" )
+  #PRINT2=$( printf "%s " "${COMBINATIONS[@]}" )
+  #printf "trail: %s, Get: %s, combinations: %s \n" "$PRINT1" "$GET_NUM" "$PRINT2" >&2
 
   # Check if the end has been reached
   # or no matching neighbors
   if [[ $GET_NUM -eq 9 ]] || [[ ${#COMBINATIONS[@]} -eq 0 ]]
   then
     # Exit recursion
-    printf "%s" "${#COMBINATIONS[@]}"
+    printf "%s " "${COMBINATIONS[@]}"
+    #printf "%s " "${COMBINATIONS[@]}" >&2
     return
   fi
 
   # Recurse
-  TOTAL=0
   NEXT_NUM=$(( GET_NUM+=1 ))
-  for INDEX in "${COMBINATIONS[@]}"
-  do
-    COUNT=$( 
-      get_nine \
-        "$NEXT_NUM" \
-	"$( get_valid_neighbors "$INDEX" )" \
-	"$INDEX" 
-    )
-    (( TOTAL+=COUNT ))
-  done
-  printf "%s" "$TOTAL"
+  read -r -a RESULTS <<< "$(
+    for INDEX in "${COMBINATIONS[@]}"
+    do
+      RESULT=$( 
+        get_nine \
+          "$NEXT_NUM" \
+          "$( get_valid_directions "$INDEX" )" \
+          "$INDEX" 
+      )
+      printf "%s " "$RESULT"
+    done
+  )"
+  printf "%s " "${RESULTS[@]}"
+  #printf "%s " "${RESULTS[@]}" >&2
+  #printf "\n" >&2
 }
 
-get_valid_neighbors () {
+get_valid_directions () {
 
   IDX=$1
   NUM=1
@@ -134,14 +138,14 @@ get_valid_neighbors () {
   printf "%s" "$NUM"
 }
 
-PATH_COUNT=0
-ITER=999999
+ITER=9999
+TOTAL=0
 for TRAILHEAD in "${TRAILHEADS[@]}"
 do
-  COUNT=$( get_nine "1" "$( get_valid_neighbors "$TRAILHEAD" )" "$TRAILHEAD" )
-  (( PATH_COUNT+=COUNT ))
+  read -r -a PEAKS <<< "$( get_nine "1" "$( get_valid_directions "$TRAILHEAD" )" "$TRAILHEAD" )"
+  COUNT=$( printf "%s " "${PEAKS[@]}" | grep -Eo '[0-9]*' | sort -u | wc -l )
+  (( TOTAL+=COUNT ))
   (( ITER-- ))
   if [[ $ITER -eq 0 ]] ;then break; fi
 done
-
-printf "%s\n" "$PATH_COUNT"
+printf "%s\n" "$TOTAL"