prep for 2023, renaming for consistency

1 files changed, 0 insertions, 37 deletions

diff --git a/2020/day-10/day-10.rkt b/2020/day-10/day-10.rkt
deleted file mode 100644
index 77d9bb7..0000000
--- a/2020/day-10/day-10.rkt
+++ /dev/null
@@ -1,37 +0,0 @@
-#lang racket
-
-(require advent-of-code
-         threading
-         algorithms
-         memoize)
-
-;; part 1
-(define adapters
-  (~> (fetch-aoc-input (find-session) 2020 10)
-      (string-split "\n")
-      (map string->number _)
-      (sort <)
-      ((λ (xs) (flatten (list 0 xs (+ 3 (last xs))))))))
-
-(~>> adapters
-     (sliding _ 2)
-     (map (match-lambda
-            [(list b a) (- a b)]))
-     (group-by identity)
-     (map length)
-     (apply *))
-
-;; part 2
-(define subpaths
-  (for*/hash ([adapter (in-list adapters)])
-    (define predecessor-candidates (inclusive-range (+ 1 adapter) (+ 3 adapter)))
-    (values adapter (filter (λ (p) (member p adapters)) predecessor-candidates))))
-
-(define/memo (find-paths from to)
-             (define paths (hash-ref subpaths from 'failed))
-             (match paths
-               ['failed 0]
-               [(list-no-order (== to) _ ...) 1]
-               [ts (for/sum ([t (in-list ts)]) (find-paths t to))]))
-
-(find-paths (first adapters) (last adapters))