1 files changed, 0 insertions, 51 deletions
diff --git a/2021/day-04/day-04.rkt b/2021/day-04/day-04.rkt
deleted file mode 100644
index c572f74..0000000
--- a/2021/day-04/day-04.rkt
+++ /dev/null
@@ -1,51 +0,0 @@
-#lang racket
-(require advent-of-code
-         threading
-         (only-in algorithms chunks-of))
-
-(define data
-  (for/list ([l (in-lines (open-aoc-input (find-session) 2021 4 #:cache (string->path "./cache")))]
-             #:unless (equal? l ""))
-    l))
-
-(define call-sheet (~> data car (string-split ",") (map string->number _)))
-(define bingo-cards
-  (~> data cdr (map string-split _) (map (λ (row) (map string->number row)) _) (chunks-of 5)))
-
-(define test-card (first bingo-cards))
-
-(define (mark-card card call)
-  (for/list ([row (in-list card)])
-    (for/list ([col (in-list row)])
-      (if (eq? col call) 'X col))))
-
-(define (check-card card)
-  (for/or ([row (in-sequences card (apply map list card))])
-    (equal? row '(X X X X X))))
-
-(define (multiply-by-last-call n call)
-  (match n
-    ['X 0]
-    [n (* n call)]))
-
-(define (evaluate-cards cards calls [check (curry ormap check-card)] [exception not])
-  (for/fold ([current-cards cards]
-             [last-call 0]
-             #:result (~> current-cards
-                          (findf check-card _)
-                          flatten
-                          (map (λ (n) (multiply-by-last-call n last-call)) _)
-                          (apply + _)))
-            ([call (in-list calls)])
-    #:break (check current-cards)
-    (values (for/list ([card (in-list current-cards)] #:unless (exception card))
-              (mark-card card call))
-            call)))
-
-;; part 1
-(evaluate-cards bingo-cards call-sheet)
-;; part 2
-(evaluate-cards bingo-cards
-                call-sheet
-                (λ (cards) (and (= (length cards) 1) (check-card (first cards))))
-                check-card)