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-rw-r--r--2021/day-07/day-07.rkt28
1 files changed, 0 insertions, 28 deletions
diff --git a/2021/day-07/day-07.rkt b/2021/day-07/day-07.rkt
deleted file mode 100644
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--- a/2021/day-07/day-07.rkt
+++ /dev/null
@@ -1,28 +0,0 @@
-#lang racket
-(require advent-of-code
- threading
- math/statistics)
-
-(define crab-data
- (~> (open-aoc-input (find-session) 2021 7 #:cache #t)
- port->string
- string-trim
- (string-split ",")
- (map string->number _)))
-
-(define (gauss-sum n)
- (/ (* n (+ n 1)) 2))
-(define (compute-fuel-use f crabs align-to)
- (for/sum ([crab (in-list crabs)]) (f (abs (- crab align-to)))))
-
-;; using the fact that the optimum location is at the median
-;; of the crabs' starting location for the linear relationship
-;; and at a coordinate within 1 unit of the mean for the quadratic one
-
-(~>> crab-data (median <) (compute-fuel-use identity crab-data))
-
-(~>> crab-data
- mean
- ((λ (m) (list (floor m) (ceiling m))))
- (map (curry compute-fuel-use gauss-sum crab-data))
- (apply min))