move 2021 days to folder; update README

1 files changed, 0 insertions, 37 deletions

diff --git a/day21/part2.clj b/day21/part2.clj
deleted file mode 100644
index 0042aaa..0000000
--- a/day21/part2.clj
+++ /dev/null
@@ -1,37 +0,0 @@
-(defn dice-probability-spread [sides rolls]
-  (let [sr (range 1 (inc sides))]
-    (->> sr
-         (iterate #(flatten (for [i sr] (map (partial + i) %))))
-         (drop (dec rolls))
-         ((comp frequencies first)))))
-
-(def rolls (dice-probability-spread 3 3))
-
-(defn advance-pos [pos roll] (let [n (+ pos roll)] (if (> n 10) (- n 10) n)))
-
-(defn add-roll [state roll p1-turn]
-  (let [pos   (if p1-turn :pos1 :pos2)
-        score (if p1-turn :score1 :score2)
-        new-pos (advance-pos (state pos) roll)]
-    (-> state
-        (assoc pos new-pos)
-        (update score + new-pos))))
-
-(defonce wins (atom [0 0]))
-
-(loop [turn 0 states {{:pos1 4 :score1 0 :pos2 8 :score2 0} 1}]
-  (if (empty? states)
-    (println (apply max @wins))
-    (recur
-      (if (= 0 turn) 1 0)
-      (reduce
-        #(let [kvp (first %2)]
-           (if (< ((key kvp) (if (= 0 turn) :score1 :score2)) 21)
-             (if (contains? %1 (key kvp))
-               (update %1 (key kvp) +' (val kvp))
-               (conj %1 kvp))
-             (do (swap! wins update turn +' (val kvp)) %1)))
-        {}
-        (for [s states r rolls]
-          {(add-roll (first s) (key r) (= 0 turn)) (*' (second s) (val r))})))))
-