fixup! day 10 WIP

src/day10.clj

@@ -3,8 +3,6 @@
             [helpers :refer [get-input]]))
 
 (def test-map
-  (mapped-area/parse-elements
-   (mapped-area/read-mapped-area
 "89010123
 78121874
 87430965
@@ -12,7 +10,19 @@
 45678903
 32019012
 01329801
-10456732")))
+10456732")
+
+;(def test-map
+;"0123
+;1234
+;8765
+;9876")
+
+(def input
+  (->
+   test-map
+   mapped-area/read-mapped-area
+   mapped-area/parse-elements))
 
 (defn trailheads [a]
   (reduce
@@ -42,6 +52,15 @@
       (count positions)
       (recur (mapcat (partial step a) (set positions))))))
 
+(loop [i 0 positions (trailheads input)]
+  (println "iteration" i)
+  (doall
+   (map #(println % "-" (get-in input %)) positions))
+  (if (== i 9)
+    positions
+    (recur (inc i)
+            (mapcat (partial step input) positions))))
 
-(reduce +
-        (map (partial walk test-map) (trailheads test-map)))
+(trailheads input)
+
+(mapcat (partial step input) (trailheads input))

src/day11.clj

@@ -0,0 +1,41 @@
+(ns day11
+  (:require [clojure.string :as string]
+            [helpers :refer [get-input]]))
+
+(def stones
+  (string/split
+   ;;"125 17"
+   (string/trim (get-input 11))
+   #" "))
+
+(defn split-stone [stone]
+  (let [ss (split-at
+            (/ (count stone) 2)
+            stone)
+        seq->stone
+        (fn [s]
+          (str
+           (parse-long
+            (apply str s))))]
+    (mapv seq->stone ss)))
+
+(defn blink [stone]
+  (cond
+    (= stone "0")
+    ["1"]
+    (even? (count stone))
+    (split-stone stone)
+    :else
+    (vector
+     (str
+      (* 2024
+         (parse-long stone))))))
+
+(time
+ (println "I blinked 25 times, there's"
+          (count
+           (loop [i 0 stones stones]
+             (if (= 25 i)
+               stones
+               (recur (inc i) (mapcat blink stones)))))
+          "stones!"))