1 files changed, 0 insertions, 26 deletions
diff --git a/advent-of-code/2023/09/2.rkt b/advent-of-code/2023/09/2.rkt
deleted file mode 100644
index b747b97..0000000
--- a/advent-of-code/2023/09/2.rkt
+++ /dev/null
@@ -1,26 +0,0 @@
-#lang racket
-
-(require "../../lib/utils.rkt")
-
-(define lines
-  (call-with-input-file "input"
-    (λ (fp)
-      (get-lines fp))))
-
-(define (parse-data line)
-  (map string->number (string-split line)))
-
-(define data (map parse-data lines))
-
-(define (diff lst)
-  (let loop ((cur lst) (ret '()))
-    (if (or (null? cur) (null? (cdr cur)))
-      (reverse ret)
-      (loop (cdr cur) (cons (- (cadr cur) (car cur)) ret)))))
-
-(define (predict lst)
-  (if (andmap (λ (x) (= x (car lst))) lst)
-    (car lst)
-    (- (car lst) (predict (diff lst)))))
-
-(apply + (map predict data))