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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)
(recur m (assoc res (.start m) (.group m)))
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))

79
2024/src/day04.clj
View File

@ -1,5 +1,7 @@
(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))
@ -8,51 +10,38 @@
;; part 1
(->> input
(map (partial map-indexed vector))
(map-indexed vector)
(reduce (fn [acc [row s]]
(reduce (fn [acc2 [col _c]]
(+ acc2 (->> (for [offset (range 4)]
(map #(apply get-char %)
[[row (+ col offset)]
[row (- col offset)]
[(+ row offset) col]
[(- row offset) col]
[(- row offset) (- col offset)]
[(- row offset) (+ col offset)]
[(+ row offset) (- col offset)]
[(+ row offset) (+ col offset)]]))
(apply map vector)
(filter #(= % (seq "XMAS")))
count)))
acc
s))
0))
c/get-coords
(map (partial reduce (fn [acc [row col]]
(+ acc
(->> (for [offset (range 4)]
(map #(apply get-char %)
[[row (+ col offset)]
[row (- col offset)]
[(+ row offset) col]
[(- row offset) col]
[(- row offset) (- col offset)]
[(- row offset) (+ col offset)]
[(+ row offset) (- col offset)]
[(+ row offset) (+ col offset)]]))
(apply map vector)
(filter #(= % (seq "XMAS")))
count)))
0))
(reduce +))
;; part 2
(->> input
(map reverse)
(map (partial map-indexed vector))
(map-indexed vector)
(reduce (fn [acc [row s]]
(reduce (fn [acc2 [col _c]]
(+ acc2 (if (= (get-char row col) \A)
(let [corners [[(dec row) (dec col)]
[(inc row) (dec col)]
[(dec row) (inc col)]
[(inc row) (inc col)]]
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)))
acc
s))
0)
;
)
c/get-coords
(map (partial reduce (fn [acc [row col]]
(+ acc
(if (= (get-char row col) \A)
(->> [[[(dec row) (dec col)] [(inc row) (inc col)]]
[[(inc row) (dec col)] [(dec row) (inc col)]]]
(map (partial map #(apply get-char %)))
(map set)
(apply = #{\M \S})
c/bool->binary)
0)))
0))
(reduce +))