Working part 2. Implemented sort and group for each iteration

2024/day-11/solution-2-2.sh

@@ -1,7 +1,6 @@
 #!/usr/bin/env bash
 
 FILE=input
-ITERATIONS=75
 
 # Get max num size by squaring the largest number
 MAX_NUM_SIZE=0
@@ -16,42 +15,32 @@ done <<< "$( < input tr " " "\n" )"
 
 # Just pre-compute a large number of digits
 {
-# Rule 1
-printf "0 1 \n"
+  # Rule 1
+  printf "0 1 \n"
   
-# Rule 2 : If even number of digits, split half half
-for (( i=10 ; i<100; i+=1 ))
-do
+  # Rule 2 : If even number of digits, split half half
+  for (( i=10 ; i<100; i+=1 ))
+  do
     DIGIT_COUNT=${#i}
     HALF=$(( DIGIT_COUNT / 2 ))
     printf "%s %s %s \n" "$i" "$(( 10#${i:0:$HALF} ))" "$(( 10#${i:$HALF} ))"
-done
-for (( i=1000 ; i<10000; i+=1 ))
-do
+  done
+  for (( i=1000 ; i<10000; i+=1 ))
+  do
     DIGIT_COUNT=${#i}
     HALF=$(( DIGIT_COUNT / 2 ))
     printf "%s %s %s \n" "$i" "$(( 10#${i:0:$HALF} ))" "$(( 10#${i:$HALF} ))"
-done
-for (( i=100000 ; i<1000000; i+=1 ))
-do
-  DIGIT_COUNT=${#i}
-  HALF=$(( DIGIT_COUNT / 2 ))
-  printf "%s %s %s \n" "$i" "$(( 10#${i:0:$HALF} ))" "$(( 10#${i:$HALF} ))"
-done
+  done
   
-# Rule 3
-for (( i=1; i<10; i+=1 ))
-do
+  # Rule 3
+  for (( i=1; i<10; i+=1 ))
+  do
     printf "%s %s \n" "$i" "$(( i * 2024 ))"
-done 
-for (( i=100; i<1000; i+=1 ))
-do
+  done 
+  for (( i=100; i<1000; i+=1 ))
+  do
     printf "%s %s \n" "$i" "$(( i * 2024 ))"
-done 
-for (( i=10000; i<100000; i+=1 ))
-do
-  printf "%s %s \n" "$i" "$(( i * 2024 ))"
-done 
+  done 
 } | sort -n > kv-cache
 printf "Cache built. KV size: %s \n" "$( wc -l kv-cache )" 
 
@@ -62,6 +51,7 @@ do
   KV_CACHE[${LINE%% *}]="${LINE#* }"
 done < kv-cache
 
+# Use this function for cache misses
 NUM=0
 get_num () {
 
@@ -70,7 +60,7 @@ get_num () {
   # Rule 1 : Convert 0 to 1
   if [[ $NUM -eq 0 ]]
   then
-    printf "1 \n"
+    printf "%s 1 \n" "$OCCUR"
     return
   fi
 
@@ -79,31 +69,40 @@ get_num () {
   if [[ $(( DIGIT_COUNT % 2 )) -eq 0 ]]
   then
     HALF=$(( DIGIT_COUNT / 2 ))
-    printf "%s %s " "$(( 10#${NUM:0:$HALF} ))" "$(( 10#${NUM:$HALF} ))"
+    VALUE=( "$(( 10#${NUM:0:$HALF} ))" "$(( 10#${NUM:$HALF} ))" )
+    printf "%s %s \n" "$OCCUR" "${VALUE[0]}"
+    printf "%s %s \n" "$OCCUR" "${VALUE[1]}"
     return
   fi
 
   # Rule 3 : Multiply by 2024
-  printf "%s \n" "$(( NUM * 2024 ))"
+  printf "%s %s \n" "$OCCUR" "$(( NUM * 2024 ))"
   return
 }
 
 # Start the loop
-tr " " "\n" < "$FILE" > temp-input
+tr " " "\n" < "$FILE" | sort -n | uniq -c > temp-input
 for (( i=0; i<75; i++ ))
 do
   printf "%s Position %s\n" "$( date )" "$i"
-  while read -r NUM
+  #cat temp-input
+  while read -r OCCUR NUM
   do
-    if [[ -v ${KV_CACHE[$NUM]} ]]
+    if [[ -v KV_CACHE[$NUM] ]]
     then
-      printf "%s \n" "${KV_CACHE[$NUM]}"
+      for VAL in ${KV_CACHE[$NUM]}
+      do
+        printf "%s %s \n" "$OCCUR" "$VAL"
+      done
     else
       get_num "$NUM"
     fi
   done < temp-input |
-  tr " " "\n" |
-  grep -Eo '[0-9]*' | 
+  grep -E '[0-9]*' | 
+  tee temp-output |
+  sort |
+  uniq -c |
+  awk '{print ($1 * $2) " " $3}' |
   sponge temp-input
 done
-printf "Final count: %s\n" "$(wc -l < temp-input)"
+printf "Final count: %s\n" "$( awk '{print $1}' < temp-input | paste -s -d "+" | bc )"