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| author | H.J <thechairman@thechairman.info> | 2024-10-09 11:36:55 -0400 |
|---|---|---|
| committer | H.J <thechairman@thechairman.info> | 2024-10-09 11:36:55 -0400 |
| commit | 8777ff071f7bb37631baa7b6717ad29961e50911 (patch) | |
| tree | 6d59c4ed58e454b960339c3d1151f0a879e8d7cb /racket/aoc2023/day-09/day-09-polynomial.rkt | |
| parent | 6156a9ef7be4012063a042aafb4e9b0d7eadde8e (diff) | |
| download | gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.tar.gz gleam_aoc-8777ff071f7bb37631baa7b6717ad29961e50911.zip | |
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Diffstat (limited to 'racket/aoc2023/day-09/day-09-polynomial.rkt')
| -rw-r--r-- | racket/aoc2023/day-09/day-09-polynomial.rkt | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/racket/aoc2023/day-09/day-09-polynomial.rkt b/racket/aoc2023/day-09/day-09-polynomial.rkt new file mode 100644 index 0000000..5bacb1f --- /dev/null +++ b/racket/aoc2023/day-09/day-09-polynomial.rkt @@ -0,0 +1,17 @@ +#lang racket + +(require advent-of-code + threading + simple-polynomial/tools) + +(define histories + (for/list ([raw-history (in-lines (open-aoc-input (find-session) 2023 9 #:cache #true))]) + (~>> raw-history + string-split + (map string->number)))) + +(for/lists (left right #:result (cons (apply + left) (apply + right))) + ([history (in-list histories)]) + (define f (interpolate-at-integer-points history)) + (values (f -1) + (f (length history)))) |