do 2017 day 6

2026-04-26 11:01:02 -04:00
parent 5077215205
commit 1087a7649b
1 changed files with 26 additions and 0 deletions
@@ -0,0 +1,26 @@
+(ns day06
+  (:require [input-manager]
+            [core :refer [split-whitespace]]))
+
+(def input
+  (->> (input-manager/get-input-raw 2017 6)
+       split-whitespace
+       (mapv parse-long)))
+
+(loop [state input
+       i 0
+       seen {}]
+  (if  (contains? seen state)
+    {:part-one i
+     :part-two (- i (seen state))}
+    (let [cnt  (apply max state)
+          idx (->> state
+                   (map-indexed vector)
+                   (filter #(= (second %) cnt))
+                   ffirst)]
+      (recur (->> (range cnt)
+                  (map #(mod (+ idx 1 %) (count state)))
+                  (reduce #(update %1 %2 inc) (assoc state idx 0)))
+             (inc i)
+             (assoc seen state i)))))
+