diff options
| -rw-r--r-- | resources/day03_actual.txt | 300 | ||||
| -rw-r--r-- | resources/day03_sample.txt | 6 | ||||
| -rw-r--r-- | src/aoc_2022/day03.clj | 55 |
3 files changed, 361 insertions, 0 deletions
diff --git a/resources/day03_actual.txt b/resources/day03_actual.txt new file mode 100644 index 0000000..5533a94 --- /dev/null +++ b/resources/day03_actual.txt @@ -0,0 +1,300 @@ +zBBtHnnHtwwHplmlRlzPLCpp +vvhJccJFGFcNsdNNJbhJsJQplQMRLQMlfdfTPCLfQQCT +GPhjcjhZDjWtnSVH +BNhHVhrGNVTbDHdDJdJRPJdSQQSJwPjR +lvtsfbsqzwSnJcvjSm +MftttFLftZMLgtgMbltMqZzbDNrTpVGhNWrDTrpTGNpZGZhD +VSSHcTgTtTdtllZlzmmbljTn +RqMqsFfQLLFLQFMMfRLPZLvPpCfWrbpmCbjCnfjlWmnrmmnm +hqRDqPDRsqNHwtHSNBZtJd +tNFDpDFrtdjfmjjjFmFFdScpZhZScTJgpHccHhMJgS +lLzSlSCQqbsVhBghggBZgCcJ +zRLVVLQnvQqVVzRldfWrwffjjdwSdfjv +bpWqqqWvHBpwGBCCRl +hJdjdJFQqdBBDMMC +tFFzJZFtJSqtZJQsWLbNSTnffHfvTH +lFhRZhFjPlqMlJqZJlJcRLwrLrwStRwtsVVtVSrgRV +WcpDvDfBmpDHzWBDbpbmWmNVSSTzLTtrVswgttVVzwwr +pbWfmGBpHfDmWnvvGbmWnjjMqPJMlMFPdGcjqPqPhP +NjFNRlpVLFCSSlbBWWfw +pssPZQQsMnzmtnQPttzDBbBJBcrrJWbrZSBJSbfC +QTHPHspMNGHdhvRR +QfPdSJfFJmthSthtwbsNLbPLlLTLpbvP +nHnMBnZqqgBMnWrZMqnZVcbCqRwNsvblRwppbllTsRNp +nZHBHznMnWgcrnVBtjFdfmzQNtNddjNF 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+BvzCQQbBQgffsDbvVHMdbcVqmLVqlmqq +JvJCzBDJwnsRnQDszCBnnnQBrjZPjFpgZFTFZRpTrpZFGFtT +wBHQQZHVCcpwDgdZdMsZjvMZFn +GPSzlNlJLfzzzvsWdWLMmFWLMM +NfqGSfrTNzRTqJfRbptQHFQFrwrFHBHw +sNjVMVNVMzPzQgghcMsNzJtjSJtTFDTJtJnnDLjDnL +CHwrdCpvCrwrWdpZqcpFttJSFJTLLHLJfbnbfD +qrlZCwlqZrqqpWdlRqCRqdqcVNsVMzQzmNgNPBsRhVQVVzMs diff --git a/resources/day03_sample.txt b/resources/day03_sample.txt new file mode 100644 index 0000000..f17e726 --- /dev/null +++ b/resources/day03_sample.txt @@ -0,0 +1,6 @@ +vJrwpWtwJgWrhcsFMMfFFhFp +jqHRNqRjqzjGDLGLrsFMfFZSrLrFZsSL +PmmdzqPrVvPwwTWBwg +wMqvLMZHhHMvwLHjbvcjnnSBnvTQFn +ttgJtRGJQctTZtZT +CrZsJsPPZsGzwwsLwLmpwMDw diff --git a/src/aoc_2022/day03.clj b/src/aoc_2022/day03.clj new file mode 100644 index 0000000..38ae011 --- /dev/null +++ b/src/aoc_2022/day03.clj @@ -0,0 +1,55 @@ +(ns aoc-2022.day03) +(require '[clojure.java.io :as io]) +(require '[aoc-2022.utils :as utils]) + +(defn compartments [sack] + (let [n (count sack)] + [(take (/ n 2) sack) + (drop (/ n 2) sack)])) + +(defn find-common [needles haystack] + (let [needle (first needles) + occurs (fn [hs] (filter #(= needle %) hs))] + (cond + (nil? needle) nil + (not (empty? (occurs haystack))) needle + :else (find-common (rest needles) haystack)))) + +(defn priority-of [item] + (cond + (<= (int item) (int \Z)) (+ 27 (- (int item) (int \A))) + :else (+ 1 (- (int item) (int \a))))) + +(defn task1 [rows] + (->> rows + (map compartments) + (map (fn [[c1 c2]] (find-common c1 c2))) + (map priority-of) + (reduce +) + )) + +(defn find-common2 [needles hs1 hs2] + (let [needle (first needles) + occurs (fn [hs] (filter #(= needle %) hs))] + (cond + (nil? needle) + nil + (and + (not (empty? (occurs hs1))) + (not (empty? (occurs hs2)))) + needle + :else + (find-common2 (rest needles) hs1 hs2)))) + +(defn task2 [rows] + (->> rows + (partition 3) + (map (fn [[c1 c2 c3]] (find-common2 c1 c2 c3))) + (map priority-of) + (reduce +))) + +(with-open [rdr (io/reader "resources/day03_actual.txt")] + (let [rows (line-seq rdr)] + (do + (println "task1:" (task1 rows)) + (println "task2:" (task2 rows))))) |