1 files changed, 0 insertions, 47 deletions
diff --git a/aoc2023-racket/day-13/day-13.rkt b/aoc2023-racket/day-13/day-13.rkt
deleted file mode 100644
index 47718f8..0000000
--- a/aoc2023-racket/day-13/day-13.rkt
+++ /dev/null
@@ -1,47 +0,0 @@
-#lang racket
-
-(require advent-of-code
-         threading)
-
-(define input
-  (~>(fetch-aoc-input (find-session) 2023 13 #:cache #true)
-     (string-split "\n\n")
-     (map (λ~> string-split) _)))
-
-(define (do-symmetric? lefts rights errs)
-  (cond
-    [(empty? rights) #f]
-    [else
-     (define found-errs
-       (for/sum ([l (in-string (string-join lefts ""))]
-                 [r (in-string (string-join rights ""))]
-                 #:unless (char=? l r))
-         1))
-     (if (= errs found-errs)
-         (length lefts)
-         (do-symmetric? (cons (first rights) lefts)
-                        (rest rights)
-                        errs))]))
-
-(define (symmetric? xss errs)
-  (do-symmetric? (list (first xss)) (rest xss) errs))
-
-(define (transpose strs)
-  (~> strs
-      (map string->list _)
-      (apply map list _)
-      (map list->string _)))
-
-(define (find-symmetry-score xss errs)
-  (cond
-    [(symmetric? xss errs) => (curry * 100)]
-    [else (symmetric? (transpose xss) errs)]))
-
-;; part 1
-(for/sum ([note (in-list input)])
-  (find-symmetry-score note 0))
-
-;; part 2
-(for/sum ([note (in-list input)])
-  (find-symmetry-score note 1))
-