Working part 2. Added check_tail for digit matching.

2024/day-17/solution-2.sh

@@ -1,31 +1,44 @@
 #!/usr/bin/env bash
 
 FILE=$1
-ITER=99
+ITER=1
+MACHINE_ITER=999
 DEBUG=false
+INCREMENT=1
+TAIL_NUM=16
 
 REG_A=$(grep 'Register A:' "$FILE" | cut -f2 -d: )
 REG_B=$(grep 'Register B:' "$FILE" | cut -f2 -d: )
 REG_C=$(grep 'Register C:' "$FILE" | cut -f2 -d: )
+#REG_A=100000000000000
+REG_A=164541160582800
 read -r -a INPUT <<< "$(grep 'Program:' "$FILE" | cut -f2 -d: | tr ',' ' ' )"
 INPUT_LEN=${#INPUT[@]}
 
 printf "Registers A: %s B: %s C: %s\n" "$REG_A" "$REG_B" "$REG_C" >&2
-printf "Input : " >&2
-printf "%s " "${INPUT[@]}" >&2
-printf "\n" >&2
+#printf "Input: " >&2
+#printf "%s " "${INPUT[@]}" >&2
+#printf "\n" >&2
 
 # Load machine operations
 . machine.sh
 
-POINTER=0
-while [[ $POINTER -lt $INPUT_LEN ]]
+#while ! check_quine
+while ! check_tail "$TAIL_NUM"
 do
-  OPCODE=${INPUT[$POINTER]}
-  OPERAND=${INPUT[$POINTER+1]}
-  read_opcode "$OPCODE" "$OPERAND"
-  printf "Registers A : %s B: %s C : %s\n" "$REG_A" "$REG_B" "$REG_C" >&2
-  printf "Pointer : %s\n" "$POINTER" >&2
-  (( ITER-- ))
-  if [[ $ITER -eq 0 ]] ; then break ;fi
-done | paste -s -d "," 
+  read -r -a OUTPUT <<< "$( execute_machine )"
+  printf "Register A: %s\n" "$REG_A"
+  printf "Output:\t"
+  #printf "%s " "${OUTPUT[@]}"
+  for i in "${OUTPUT[@]}"
+  do
+    printf "%s " "$i" # Print octal representation
+  done
+  printf "\n"
+  printf "Input:\t"
+  printf "%s " "${INPUT[@]}"
+  printf "\n"
+  (( REG_A+=INCREMENT))
+  #(( ITER-- ))
+  if [[ $ITER -eq 0 ]] ; then break ; fi
+done