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golf

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This commit is contained in:
Adam Jeniski 2024-12-04 23:10:24 -05:00
parent 22ac0db085
commit b25e12b3a2
2 changed files with 49 additions and 45 deletions
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15
2024/src/core.clj
View File

@ -17,3 +17,18 @@
(if (.find m) (if (.find m)
(recur m (assoc res (.start m) (.group m))) (recur m (assoc res (.start m) (.group m)))
res))) res)))
(defn dbg [x]
(println x)
x)
(defn get-coords
"returns a lazy seq representing list of list x, y tuples"
[list-of-lists]
(->> list-of-lists count range
(map #(->> % (get list-of-lists) count range))
(map-indexed (fn [row cols]
(map #(list row %) cols)))))
(defn bool->binary [condition]
(if condition 1 0))

51
2024/src/day04.clj
View File

@ -1,5 +1,7 @@
(ns day04 (ns day04
(:require [input-manager :refer [get-input]])) (:require [input-manager :refer [get-input]]
[core :as c]
[clojure.string :as str]))
(def input (get-input 4)) (def input (get-input 4))
@ -8,11 +10,10 @@
;; part 1 ;; part 1
(->> input (->> input
(map (partial map-indexed vector)) c/get-coords
(map-indexed vector) (map (partial reduce (fn [acc [row col]]
(reduce (fn [acc [row s]] (+ acc
(reduce (fn [acc2 [col _c]] (->> (for [offset (range 4)]
(+ acc2 (->> (for [offset (range 4)]
(map #(apply get-char %) (map #(apply get-char %)
[[row (+ col offset)] [[row (+ col offset)]
[row (- col offset)] [row (- col offset)]
@ -25,34 +26,22 @@
(apply map vector) (apply map vector)
(filter #(= % (seq "XMAS"))) (filter #(= % (seq "XMAS")))
count))) count)))
acc
s))
0)) 0))
(reduce +))
;; part 2 ;; part 2
(->> input (->> input
(map reverse) c/get-coords
(map (partial map-indexed vector)) (map (partial reduce (fn [acc [row col]]
(map-indexed vector) (+ acc
(reduce (fn [acc [row s]] (if (= (get-char row col) \A)
(reduce (fn [acc2 [col _c]] (->> [[[(dec row) (dec col)] [(inc row) (inc col)]]
(+ acc2 (if (= (get-char row col) \A) [[(inc row) (dec col)] [(dec row) (inc col)]]]
(let [corners [[(dec row) (dec col)] (map (partial map #(apply get-char %)))
[(inc row) (dec col)] (map set)
[(dec row) (inc col)] (apply = #{\M \S})
[(inc row) (inc col)]] c/bool->binary)
chars (mapv #(apply get-char %) corners)]
(if (and (= 2
(count (filter #(= % \S) chars))
(count (filter #(= % \M) chars)))
(not= (get chars 0)
(get chars 3)))
1
0))
0))) 0)))
acc 0))
s)) (reduce +))
0)
;
)