comparing d6fd7f21632af7b2233726a18c26a1b0356fe06d and main on treybastian.com/advent-of-code

.gitignore

···

       1
       +
       input.txt

     

       2
       +
       input_test.txt

+51

2025/day_01.cbl

···

       1
       +
              IDENTIFICATION DIVISION.

     

       2
       +
              PROGRAM-ID. day_01.

     

       3
       +
              AUTHOR. Trey Bastian.

     

       4
       +
              ENVIRONMENT DIVISION.

     

       5
       +
              INPUT-OUTPUT SECTION.

     

       6
       +
              FILE-CONTROL.

     

       7
       +
              SELECT input-file ASSIGN TO "./input.txt"

     

       8
       +
                  ORGANIZATION IS LINE SEQUENTIAL.

     

       9
       +
              DATA DIVISION.

     

       10
       +
              FILE SECTION.

     

       11
       +
              FD input-file.

     

       12
       +
              01 input-line.

     

       13
       +
                02 direction PIC X.

     

       14
       +
                02 move-text PIC XXX.

     

       15
       +
              WORKING-STORAGE SECTION.

     

       16
       +
              01 dial-position PIC 9(2) VALUE 50.

     

       17
       +
              01 move-num PIC S9(3).

     

       18
       +
              01 zero-count PIC 9(4) VALUE ZEROS.

     

       19
       +
              01 eof PIC X.

     

       20
       +
                  88 eof-y VALUE "Y".

     

       21
       +
                  88 eof-n VALUE "N".

     

       22
       +
       

     

       23
       +
              

     

       24
       +
              PROCEDURE DIVISION.

     

       25
       +
                OPEN INPUT input-file.

     

       26
       +
                SET eof-n to TRUE.

     

       27
       +
                PERFORM UNTIL eof-y

     

       28
       +
                    READ input-file AT END

     

       29
       +
                        SET eof-y to TRUE

     

       30
       +
                    NOT AT END

     

       31
       +
                      MOVE FUNCTION NUMVAL(move-text) TO move-num

     

       32
       +
                      IF direction = "L"

     

       33
       +
                       COMPUTE move-num = 0 - move-num 

     

       34
       +
                      END-IF

     

       35
       +
                      

     

       36
       +
                      COMPUTE dial-position = FUNCTION MOD(dial-position +

     

       37
       +
                      move-num, 100) 

     

       38
       +
       

     

       39
       +
                      if dial-position < 0

     

       40
       +
                        ADD 100 to dial-position

     

       41
       +
                      END-IF

     

       42
       +
       

     

       43
       +
                      if dial-position = 0 

     

       44
       +
                        ADD 1 to zero-count

     

       45
       +
                      END-IF

     

       46
       +
                     END-READ

     

       47
       +
                END-PERFORM.

     

       48
       +
                CLOSE input-file.

     

       49
       +
                DISPLAY zero-count.

     

       50
       +
              STOP-RUN.

     

       51
       +

+67

2025/day_01_part2.cbl

···

       1
       +
              IDENTIFICATION DIVISION.

     

       2
       +
              PROGRAM-ID. day_01_part2.

     

       3
       +
              AUTHOR. Trey Bastian.

     

       4
       +
              ENVIRONMENT DIVISION.

     

       5
       +
              INPUT-OUTPUT SECTION.

     

       6
       +
              FILE-CONTROL.

     

       7
       +
              SELECT input-file ASSIGN TO "./input.txt"

     

       8
       +
                  ORGANIZATION IS LINE SEQUENTIAL.

     

       9
       +
              DATA DIVISION.

     

       10
       +
              FILE SECTION.

     

       11
       +
              FD input-file.

     

       12
       +
              01 input-line.

     

       13
       +
                02 direction PIC X.

     

       14
       +
                02 move-text PIC XXX.

     

       15
       +
              WORKING-STORAGE SECTION.

     

       16
       +
              01 dial-position PIC 9(2) VALUE 50.

     

       17
       +
              01 new-position PIC 9(2).

     

       18
       +
              01 move-num PIC S9(3).

     

       19
       +
              01 zero-count PIC 9(4) VALUE ZEROS.

     

       20
       +
              01 eof PIC X.

     

       21
       +
                  88 eof-y VALUE "Y".

     

       22
       +
                  88 eof-n VALUE "N".

     

       23
       +
       

     

       24
       +
              

     

       25
       +
              PROCEDURE DIVISION.

     

       26
       +
                OPEN INPUT input-file.

     

       27
       +
                SET eof-n to TRUE.

     

       28
       +
                PERFORM UNTIL eof-y

     

       29
       +
                    READ input-file AT END

     

       30
       +
                        SET eof-y to TRUE

     

       31
       +
                    NOT AT END

     

       32
       +
                      MOVE FUNCTION NUMVAL(move-text) TO move-num

     

       33
       +
                      IF move-num > 99 

     

       34
       +
                        COMPUTE zero-count = zero-count + (move-num / 100) 

     

       35
       +
                      END-IF

     

       36
       +
       

     

       37
       +
                      IF direction = "L"

     

       38
       +
                       COMPUTE move-num = 0 - move-num 

     

       39
       +
                      END-IF

     

       40
       +
                      

     

       41
       +
                      COMPUTE new-position = FUNCTION MOD(dial-position +

     

       42
       +
                      move-num, 100) 

     

       43
       +
       

     

       44
       +
                      if new-position < 0

     

       45
       +
                        ADD 100 to new-position

     

       46
       +
                      END-IF

     

       47
       +
       

     

       48
       +
                      EVALUATE new-position

     

       49
       +
                        WHEN 0

     

       50
       +
                          ADD 1 to zero-count

     

       51
       +
                         WHEN < dial-position AND direction = "R" AND

     

       52
       +
                           dial-position <> 0

     

       53
       +
                           ADD 1 to zero-count

     

       54
       +
                         WHEN > dial-position AND direction = "L" AND

     

       55
       +
                           dial-position <> 0

     

       56
       +
                           ADD 1 to zero-count

     

       57
       +
                       END-EVALUATE

     

       58
       +
       

     

       59
       +
                      

     

       60
       +
                      MOVE new-position TO dial-position

     

       61
       +
       

     

       62
       +
                     END-READ

     

       63
       +
                END-PERFORM.

     

       64
       +
                CLOSE input-file.

     

       65
       +
                DISPLAY zero-count.

     

       66
       +
              STOP-RUN.

     

       67
       +

+76

2025/day_02.cbl

···

       1
       +
              IDENTIFICATION DIVISION.

     

       2
       +
              PROGRAM-ID. day_02.

     

       3
       +
              AUTHOR. Trey Bastian.

     

       4
       +
              ENVIRONMENT DIVISION.

     

       5
       +
              INPUT-OUTPUT SECTION.

     

       6
       +
              FILE-CONTROL.

     

       7
       +
              SELECT input-file ASSIGN TO "./input.txt"

     

       8
       +
                  ORGANIZATION IS LINE SEQUENTIAL.

     

       9
       +
              DATA DIVISION.

     

       10
       +
              FILE SECTION.

     

       11
       +
              FD input-file.

     

       12
       +
              01 input-line PIC X(4096). 

     

       13
       +
              WORKING-STORAGE SECTION.

     

       14
       +
              01 ptr PIC 9(4) Value 1.

     

       15
       +
              01 len PIC 9(4).

     

       16
       +
              01 left-val PIC 9(32).

     

       17
       +
              01 right-val PIC 9(32).

     

       18
       +
              01 grouping PIC X(65).

     

       19
       +
       

     

       20
       +
              01 val-string PIC Z(32).

     

       21
       +
              01 val-string-len PIC 9(2).

     

       22
       +
              01 val-string-start-idx PIC 9(2).

     

       23
       +
              01 val-string-half PIC 9(2).

     

       24
       +
              01 result PIC 9(32) VALUE ZEROS.

     

       25
       +
       

     

       26
       +
              01 eof PIC X.

     

       27
       +
                  88 eof-y VALUE "Y".

     

       28
       +
                  88 eof-n VALUE "N".

     

       29
       +
              PROCEDURE DIVISION.

     

       30
       +
                OPEN INPUT input-file.

     

       31
       +
                SET eof-n to TRUE.

     

       32
       +
                PERFORM UNTIL eof-y

     

       33
       +
                    READ input-file AT END

     

       34
       +
                        SET eof-y to TRUE

     

       35
       +
                    NOT AT END

     

       36
       +
                     INSPECT input-line TALLYING len FOR CHARACTERS BEFORE

     

       37
       +
                     SPACE

     

       38
       +
       

     

       39
       +
                     PERFORM UNTIL ptr > len

     

       40
       +
                       UNSTRING input-line DELIMITED BY "," INTO grouping WITH

     

       41
       +
                       POINTER ptr

     

       42
       +
                       END-UNSTRING

     

       43
       +
       

     

       44
       +
                       UNSTRING grouping DELIMITED BY "-" INTO left-val,

     

       45
       +
                       right-val

     

       46
       +
                       END-UNSTRING

     

       47
       +
                       

     

       48
       +
                       PERFORM VARYING  left-val FROM left-val BY 1 UNTIL

     

       49
       +
                         left-val > right-val

     

       50
       +
                         MOVE left-val TO val-string

     

       51
       +
       

     

       52
       +
                         COMPUTE val-string-len = FUNCTION LENGTH(FUNCTION

     

       53
       +
                         TRIM(val-string))

     

       54
       +
                         IF FUNCTION MOD(val-string-len, 2) = 0

     

       55
       +
       

     

       56
       +
                           COMPUTE val-string-start-idx = 

     

       57
       +
                           (FUNCTION LENGTH(val-string) - val-string-len ) + 1

     

       58
       +
                           COMPUTE val-string-half = val-string-len / 2

     

       59
       +
       

     

       60
       +
                           IF val-string(val-string-start-idx:val-string-half) 

     

       61
       +
                             = val-string(val-string-start-idx +

     

       62
       +
                             val-string-half:val-string-half)

     

       63
       +
       

     

       64
       +
                             ADD left-val TO result 

     

       65
       +
                           END-IF

     

       66
       +
                         END-IF

     

       67
       +
                       END-PERFORM

     

       68
       +
       

     

       69
       +
                     END-PERFORM

     

       70
       +
       

     

       71
       +
                     END-READ

     

       72
       +
                END-PERFORM.

     

       73
       +
                CLOSE input-file.

     

       74
       +
                DISPLAY result.

     

       75
       +
              STOP-RUN.

     

       76
       +

+103

2025/day_02_part2.cbl

···

       1
       +
              IDENTIFICATION DIVISION.

     

       2
       +
              PROGRAM-ID. day_02_part2.

     

       3
       +
              AUTHOR. Trey Bastian.

     

       4
       +
              ENVIRONMENT DIVISION.

     

       5
       +
              INPUT-OUTPUT SECTION.

     

       6
       +
              FILE-CONTROL.

     

       7
       +
              SELECT input-file ASSIGN TO "./input.txt"

     

       8
       +
                  ORGANIZATION IS LINE SEQUENTIAL.

     

       9
       +
              DATA DIVISION.

     

       10
       +
              FILE SECTION.

     

       11
       +
              FD input-file.

     

       12
       +
              01 input-line PIC X(4096). 

     

       13
       +
              WORKING-STORAGE SECTION.

     

       14
       +
              01 ptr PIC 9(4) Value 1.

     

       15
       +
              01 len PIC 9(4).

     

       16
       +
              01 left-val PIC 9(32).

     

       17
       +
              01 right-val PIC 9(32).

     

       18
       +
              01 grouping PIC X(65).

     

       19
       +
       

     

       20
       +
              01 val-string PIC Z(32).

     

       21
       +
              01 val-string-len PIC 9(2).

     

       22
       +
              01 val-string-start-idx PIC 9(2).

     

       23
       +
              01 val-string-half PIC 9(2).

     

       24
       +
              01 val-window PIC 9(2) VALUE 1. 

     

       25
       +
              01 c-idx PIC 9(2).

     

       26
       +
              01 s-left PIC Z(16).

     

       27
       +
              01 s-right PIC Z(16).

     

       28
       +
              01 no-match PIC X VALUE "N".

     

       29
       +
              01 result PIC 9(32) VALUE ZEROS.

     

       30
       +
       

     

       31
       +
              01 eof PIC X.

     

       32
       +
                  88 eof-y VALUE "Y".

     

       33
       +
                  88 eof-n VALUE "N".

     

       34
       +
              PROCEDURE DIVISION.

     

       35
       +
                OPEN INPUT input-file.

     

       36
       +
                SET eof-n to TRUE.

     

       37
       +
                PERFORM UNTIL eof-y

     

       38
       +
                    READ input-file AT END

     

       39
       +
                        SET eof-y to TRUE

     

       40
       +
                    NOT AT END

     

       41
       +
                     INSPECT input-line TALLYING len FOR CHARACTERS BEFORE

     

       42
       +
                     SPACE

     

       43
       +
       

     

       44
       +
                     PERFORM UNTIL ptr > len

     

       45
       +
                       UNSTRING input-line DELIMITED BY "," INTO grouping WITH

     

       46
       +
                       POINTER ptr

     

       47
       +
                       END-UNSTRING

     

       48
       +
       

     

       49
       +
                       UNSTRING grouping DELIMITED BY "-" INTO left-val,

     

       50
       +
                       right-val

     

       51
       +
                       END-UNSTRING

     

       52
       +
                       

     

       53
       +
                       PERFORM VARYING  left-val FROM left-val BY 1 UNTIL

     

       54
       +
                         left-val > right-val

     

       55
       +
                         MOVE left-val TO val-string

     

       56
       +
       

     

       57
       +
                         COMPUTE val-string-len = FUNCTION LENGTH(FUNCTION

     

       58
       +
                         TRIM(val-string))

     

       59
       +
       

     

       60
       +
                         COMPUTE val-string-start-idx = 

     

       61
       +
                         (FUNCTION LENGTH(val-string) - val-string-len ) + 1

     

       62
       +
       

     

       63
       +
                         COMPUTE val-string-half = val-string-len / 2

     

       64
       +
       

     

       65
       +
                         PERFORM VARYING val-window FROM 1 BY 1 

     

       66
       +
                           UNTIL val-window > val-string-half

     

       67
       +
                           COMPUTE c-idx = val-string-start-idx + val-window

     

       68
       +
                           MOVE "N" to no-match

     

       69
       +
                           PERFORM VARYING c-idx 

     

       70
       +
                             FROM c-idx 

     

       71
       +
                             BY val-window

     

       72
       +
                             UNTIL c-idx

     

       73
       +
                             > FUNCTION LENGTH(val-string)  

     

       74
       +
       

     

       75
       +
                             MOVE val-string(val-string-start-idx:val-window)

     

       76
       +
                             TO s-left

     

       77
       +
       

     

       78
       +
                             IF (c-idx + val-window 

     

       79
       +
                               > FUNCTION LENGTH(val-string))

     

       80
       +
                                  MOVE val-string(c-idx:) TO s-right

     

       81
       +
                              ELSE

     

       82
       +
                                  MOVE val-string(c-idx:val-window) TO s-right

     

       83
       +
                              END-IF

     

       84
       +
                             

     

       85
       +
                             IF NOT s-left = s-right 

     

       86
       +
                               MOVE "Y" to no-match

     

       87
       +
                               EXIT PERFORM

     

       88
       +
                             END-IF

     

       89
       +
                           END-PERFORM

     

       90
       +
                           IF no-match = "N"

     

       91
       +
                             ADD left-val to result

     

       92
       +
                             EXIT PERFORM

     

       93
       +
                           END-IF

     

       94
       +
                         END-PERFORM

     

       95
       +
                       END-PERFORM

     

       96
       +
                     END-PERFORM

     

       97
       +
       

     

       98
       +
                     END-READ

     

       99
       +
                END-PERFORM.

     

       100
       +
                CLOSE input-file.

     

       101
       +
                DISPLAY result.

     

       102
       +
              STOP-RUN.

     

       103
       +

+63

2025/day_03.cbl

···

       1
       +
              IDENTIFICATION DIVISION.

     

       2
       +
              PROGRAM-ID. day_03.

     

       3
       +
              AUTHOR. Trey Bastian.

     

       4
       +
              ENVIRONMENT DIVISION.

     

       5
       +
              INPUT-OUTPUT SECTION.

     

       6
       +
              FILE-CONTROL.

     

       7
       +
              SELECT input-file ASSIGN TO "./input.txt"

     

       8
       +
                  ORGANIZATION IS LINE SEQUENTIAL.

     

       9
       +
              DATA DIVISION.

     

       10
       +
              FILE SECTION.

     

       11
       +
              FD input-file.

     

       12
       +
              01 input-line PIC Z(4096). 

     

       13
       +
              WORKING-STORAGE SECTION.

     

       14
       +
              01 idx PIC 9(4).

     

       15
       +
              01 idx-2 PIC 9(4).

     

       16
       +
              01 len PIC 9(4).

     

       17
       +
       

     

       18
       +
              01 maxim PIC 9 VALUE 0.

     

       19
       +
              01 digit PIC 9 VALUE 0.

     

       20
       +
       

     

       21
       +
              01 joltage PIC XX.

     

       22
       +
              01 result PIC 9(10) VALUE 0.

     

       23
       +
       

     

       24
       +
              

     

       25
       +
              01 eof PIC X.

     

       26
       +
                  88 eof-y VALUE "Y".

     

       27
       +
                  88 eof-n VALUE "N".

     

       28
       +
       

     

       29
       +
              PROCEDURE DIVISION.

     

       30
       +
                OPEN INPUT input-file.

     

       31
       +
                SET eof-n to TRUE.

     

       32
       +
                PERFORM UNTIL eof-y

     

       33
       +
                    READ input-file AT END

     

       34
       +
                        SET eof-y to TRUE

     

       35
       +
                    NOT AT END

     

       36
       +
                       MOVE FUNCTION LENGTH(FUNCTION TRIM(input-line)) TO len

     

       37
       +
                       MOVE 0 TO maxim

     

       38
       +
             *first pass leave something on the right

     

       39
       +
                       PERFORM VARYING idx FROM 1 UNTIL idx > len - 1 

     

       40
       +
                           MOVE FUNCTION NUMVAL(input-line(idx:1)) TO digit

     

       41
       +
                           IF maxim < digit

     

       42
       +
                             MOVE digit TO maxim

     

       43
       +
                             MOVE idx TO idx-2

     

       44
       +
                           END-IF

     

       45
       +
                       END-PERFORM 

     

       46
       +
             * need the next index 

     

       47
       +
                       MOVE maxim TO joltage(1:1)

     

       48
       +
                       MOVE 0 TO maxim

     

       49
       +
                       ADD 1 TO idx-2 

     

       50
       +
                       PERFORM VARYING idx-2 FROM idx-2  UNTIL idx-2 > len

     

       51
       +
                         MOVE FUNCTION NUMVAL(input-line(idx-2:1)) TO digit

     

       52
       +
                         IF maxim < digit

     

       53
       +
                           MOVE digit TO maxim

     

       54
       +
                         END-IF

     

       55
       +
                       END-PERFORM

     

       56
       +
                       MOVE maxim TO joltage(2:1)

     

       57
       +
                       ADD FUNCTION NUMVAL(joltage) TO result

     

       58
       +
                     END-READ

     

       59
       +
                END-PERFORM.

     

       60
       +
                CLOSE input-file.

     

       61
       +
                DISPLAY result.

     

       62
       +
              STOP-RUN.

     

       63
       +

+64

2025/day_03_part2.cbl

···

       1
       +
              IDENTIFICATION DIVISION.

     

       2
       +
              PROGRAM-ID. day_03_part2.

     

       3
       +
              AUTHOR. Trey Bastian.

     

       4
       +
              ENVIRONMENT DIVISION.

     

       5
       +
              INPUT-OUTPUT SECTION.

     

       6
       +
              FILE-CONTROL.

     

       7
       +
              SELECT input-file ASSIGN TO "./input.txt"

     

       8
       +
                  ORGANIZATION IS LINE SEQUENTIAL.

     

       9
       +
              DATA DIVISION.

     

       10
       +
              FILE SECTION.

     

       11
       +
              FD input-file.

     

       12
       +
              01 input-line PIC Z(4096). 

     

       13
       +
              WORKING-STORAGE SECTION.

     

       14
       +
              01 idx PIC 9(4) VALUE 1.

     

       15
       +
              01 idx-2 PIC 9(4).

     

       16
       +
              01 len PIC 9(4).

     

       17
       +
       

     

       18
       +
              01 maxim PIC 9 VALUE 0.

     

       19
       +
              01 digit PIC 9 VALUE 0.

     

       20
       +
              01 remaining PIC 99 VALUE 12.

     

       21
       +
              01 rem-idx PIC 99 VALUE 1.

     

       22
       +
       

     

       23
       +
              01 joltage PIC X(12).

     

       24
       +
              01 result PIC 9(32) VALUE 0.

     

       25
       +
       

     

       26
       +
              

     

       27
       +
              01 eof PIC X.

     

       28
       +
                  88 eof-y VALUE "Y".

     

       29
       +
                  88 eof-n VALUE "N".

     

       30
       +
       

     

       31
       +
              PROCEDURE DIVISION.

     

       32
       +
                OPEN INPUT input-file.

     

       33
       +
                SET eof-n to TRUE.

     

       34
       +
                PERFORM UNTIL eof-y

     

       35
       +
                    READ input-file AT END

     

       36
       +
                        SET eof-y to TRUE

     

       37
       +
                    NOT AT END

     

       38
       +
                       MOVE FUNCTION LENGTH(FUNCTION TRIM(input-line)) TO len

     

       39
       +
                       MOVE 1 TO idx

     

       40
       +
                       MOVE 12 TO remaining

     

       41
       +
                       MOVE 1 TO rem-idx

     

       42
       +
                       PERFORM UNTIL remaining < 1

     

       43
       +
                         MOVE 0 TO maxim

     

       44
       +
                         PERFORM VARYING idx FROM idx UNTIL idx > 

     

       45
       +
                           (len - remaining + 1)

     

       46
       +
                           MOVE FUNCTION NUMVAL(input-line(idx:1)) to digit

     

       47
       +
                           IF maxim < digit

     

       48
       +
                             MOVE digit TO maxim

     

       49
       +
                             MOVE idx TO idx-2

     

       50
       +
                           END-IF

     

       51
       +
                         END-PERFORM

     

       52
       +
                           MOVE maxim TO joltage(rem-idx:1)

     

       53
       +
                           ADD 1 TO rem-idx

     

       54
       +
                           SUBTRACT 1 FROM remaining

     

       55
       +
                           MOVE idx-2 TO idx

     

       56
       +
                           ADD 1 TO idx

     

       57
       +
                       END-PERFORM

     

       58
       +
                       ADD FUNCTION NUMVAL(joltage) TO result

     

       59
       +
                     END-READ

     

       60
       +
                END-PERFORM.

     

       61
       +
                CLOSE input-file.

     

       62
       +
                DISPLAY result.

     

       63
       +
              STOP-RUN.

     

       64
       +

+5 -2

README.md

···

       1
        
       # Advent of Code Repo

     

       2
        
       This repository contains my solutions to the Advent of Code challenges.

     

       3
        
       

     

       4
       -
       I stream all my solutions live on Twitch at [twitch.tv/treybastian](https://twitch.tv/treybastian).

     

       0
        
       
     

       0
        
       
     

       0
        
       
     

       5
        
       

     

       6
        
       ## 2024 - Fortran

     

       7
        
       You'll need GNUFortran to run these solutions.

     

       8
        
       

     

       9
       -
       On MacOS, you can install it with Homebrew with `brew install gcc`.

···

       1
        
       # Advent of Code Repo

     

       2
        
       This repository contains my solutions to the Advent of Code challenges.

     

       3
        
       

     

       4
       +
       ## 2025 - COBOL 

     

       5
       +
       You'll need to install GNUCobol to run these solutions.

     

       6
       +
       

     

       7
       +
       On MacOS you can install it with Homebrew: `brew install gnucobol`

     

       8
        
       

     

       9
        
       ## 2024 - Fortran

     

       10
        
       You'll need GNUFortran to run these solutions.

     

       11
        
       

     

       12
       +
       On MacOS, you can install it with Homebrew:  `brew install gcc`.

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