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author | H.J <thechairman@thechairman.info> | 2024-10-09 11:36:55 -0400 |
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committer | H.J <thechairman@thechairman.info> | 2024-10-09 11:36:55 -0400 |
commit | 8777ff071f7bb37631baa7b6717ad29961e50911 (patch) | |
tree | 6d59c4ed58e454b960339c3d1151f0a879e8d7cb /aoc2021/day-19/day-19.rkt | |
parent | 6156a9ef7be4012063a042aafb4e9b0d7eadde8e (diff) | |
download | gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.tar.gz gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.zip |
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Diffstat (limited to 'aoc2021/day-19/day-19.rkt')
-rw-r--r-- | aoc2021/day-19/day-19.rkt | 48 |
1 files changed, 0 insertions, 48 deletions
diff --git a/aoc2021/day-19/day-19.rkt b/aoc2021/day-19/day-19.rkt deleted file mode 100644 index 4c6334d..0000000 --- a/aoc2021/day-19/day-19.rkt +++ /dev/null @@ -1,48 +0,0 @@ -#lang racket -(require "../../jj-aoc.rkt" - threading - racket/struct) - -(struct coord (x y z) #:transparent) - -(define (coord-broadcast f c1 c2) - (match-define (coord x1 y1 z1) c1) - (match-define (coord x2 y2 z2) c2) - (coord (f x1 x2) (f y1 y2) (f z1 z2))) - -(define (coord-reduce f c1 c2) - (foldl (λ (i1 i2 acc) (+ acc (f i1 i2))) 0 (struct->list c1) (struct->list c2))) - -(define coord-delta (curry coord-broadcast -)) -(define coord-sum (curry coord-broadcast +)) -(define coord-manhattan (curry coord-reduce (coord 0 0 0))) - -(define (create-scan-data d) - (for/list ([l (in-list d)]) - (for/list ([pt (in-list (~> (string-split l "\n") rest))]) - (~>> pt - (regexp-match #px"(-?\\d+),(-?\\d+),(-?\\d+)") - rest - (map string->number) - (apply coord))))) - -(define scanner-data (create-scan-data (~>> (open-day 19 2021) port->string (string-split _ "\n\n")))) - -(define (generate-rotations scanner) - (apply - map - list - (for*/list ([pt (in-list scanner)]) - (match-define (coord x y z) pt) - (define orientations (list (list x y z) (list x z (- y)) (list x (- y) (- z)) (list x (- z) y))) - (append* (for/list ([o (in-list orientations)]) - (match-define (list x* y* z*) o) - (list (list x y z) - (list (- x) z y) - (list z (- y) x) - (list y x (- z)) - (list (- y) (- z) x))))))) - -(define (find-overlaps scan1 scan2) - (for/list ([rotation (in-permutations scan2)]) - (map coord-sum scan1 rotation))) |