Created
December 11, 2016 08:32
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#!/usr/bin/clojure | |
(ns advent-of-code.day-2) | |
(def s "DDDURLURURUDLDURRURULLRRDULRRLRLRURDLRRDUDRUDLRDUUDRRUDLLLURLUURLRURURLRLUDDURUULDURDRUUDLLDDDRLDUULLUDURRLUULUULDLDDULRLDLURURUULRURDULLLURLDRDULLULRRRLRLRULLULRULUUULRLLURURDLLRURRUUUDURRDLURUURDDLRRLUURLRRULURRDDRDULLLDRDDDDURURLLULDDULLRLDRLRRDLLURLRRUDDDRDLLRUDLLLLRLLRUDDLUUDRLRRRDRLRDLRRULRUUDUUDULLRLUDLLDDLLDLUDRURLULDLRDDLDRUDLDDLDDDRLLDUURRUUDLLULLRLDLUURRLLDRDLRRRRUUUURLUUUULRRUDDUDDRLDDURLRLRLLRRUDRDLRLDRRRRRRUDDURUUUUDDUDUDU | |
RLULUULRDDRLULRDDLRDUURLRUDDDUULUUUDDRDRRRLDUURDURDRLLLRDDRLURLDRRDLRLUURULUURDRRULRULDULDLRRDDRLDRUDUDDUDDRULURLULUDRDUDDDULRRRURLRRDLRDLDLLRLUULURLDRURRRLLURRRRRLLULRRRDDLRLDDUULDLLRDDRLLUUDRURLRULULRLRUULUUUUUDRURLURLDDUDDLRDDLDRRLDLURULUUDRDLULLURDLLLRRDRURUDDURRLURRDURURDLRUDRULUULLDRLRRDRLDDUDRDLLRURURLUDUURUULDURUDULRLRDLDURRLLDRDUDRUDDRLRURUDDLRRDLLLDULRRDRDRRRLURLDLURRDULDURUUUDURLDLRURRDRULLDDLLLRUULLLLURRRLLLDRRUDDDLURLRRRDRLRDLUUUDDRULLUULDURLDUUURUDRURUDRDLRRLDRURRLRDDLLLULUDDUULDURLRUDRDDD | |
RDDRUDLRLDDDRLRRLRRLUULDRLRUUURULRRLUURLLLRLULDDLDLRLULULUUDDDRLLLUDLLRUDURUDDLLDUDLURRULLRDLDURULRLDRLDLDRDDRUDRUULLLLRULULLLDDDULUUDUUDDLDRLRRDLRLURRLLDRLDLDLULRLRDLDLRLUULLDLULRRRDDRUULDUDLUUUUDUDRLUURDURRULLDRURUDURDUULRRULUULULRLDRLRLLRRRLULURLUDULLDRLDRDRULLUUUDLDUUUDLRDULRDDDDDDDDLLRDULLUDRDDRURUDDLURRUULUURURDUDLLRRRRDUDLURLLURURLRDLDUUDRURULRDURDLDRUDLRRLDLDULRRUDRDUUDRLURUURLDLUDLLRDDRDU | |
LLDDDDLUDLLDUDURRURLLLLRLRRLDULLURULDULDLDLLDRRDLUDRULLRUUURDRLLURDDLLUDDLRLLRDDLULRLDDRURLUDRDULLRUDDLUURULUUURURLRULRLDLDDLRDLDLLRUURDLUDRRRDDRDRLLUDDRLDRLLLRULRDLLRLRRDDLDRDDDUDUDLUULDLDUDDLRLDUULRULDLDULDDRRLUUURUUUDLRDRULDRRLLURRRDUDULDUDUDULLULLULULURLLRRLDULDULDLRDDRRLRDRLDRLUDLLLUULLRLLRLDRDDRUDDRLLDDLRULLLULRDDDLLLDRDLRULDDDLULURDULRLDRLULDDLRUDDUDLDDDUDRDRULULDDLDLRRDURLLRLLDDURRLRRULLURLRUDDLUURULULURLRUDLLLUDDURRLURLLRLLRRLDULRRUDURLLDDRLDLRRLULUULRRUURRRDULRLRLRDDRDULULUUDULLLLURULURRUDRLL | |
UULLULRUULUUUUDDRULLRLDDLRLDDLULURDDLULURDRULUURDLLUDDLDRLUDLLRUURRUDRLDRDDRRLLRULDLLRUUULLLDLDDULDRLRURLDRDUURLURDRUURUULURLRLRRURLDDDLLDDLDDDULRUDLURULLDDRLDLUDURLLLLLRULRRLLUDRUURLLURRLLRDRLLLRRDDDRRRDLRDRDUDDRLLRRDRLRLDDDLURUUUUULDULDRRRRLUDRLRDRUDUDDRULDULULDRUUDUULLUDULRLRRURDLDDUDDRDULLUURLDRDLDDUURULRDLUDDLDURUDRRRDUDRRDRLRLULDRDRLRLRRUDLLLDDDRURDRLRUDRRDDLDRRLRRDLUURLRDRRUDRRDLDDDLRDDLRDUUURRRUULLDDDLLRLDRRLLDDRLRRRLUDLRURULLDULLLUDLDLRLLDDRDRUDLRRDDLUU") | |
(def data (clojure.string/split-lines s)) | |
(def keypad [[1 2 3] | |
[4 5 6] | |
[7 8 9]]) | |
(defn plus | |
[[x y] [w z]] | |
[(+ x w) (+ y z)]) | |
(defn clamp [x lo hi] | |
(min hi (max lo x))) | |
(defn normalize | |
[[x y]] | |
[(clamp x 0 2) (clamp y 0 2)]) | |
(defn char-to-diff [ch] | |
(case ch | |
\U [ 0 -1] | |
\D [ 0 1] | |
\R [ 1 0] | |
\L [-1 0])) | |
(defn find-key [s] | |
(let [[x y] (-> (fn [acc input] | |
(-> input char-to-diff (plus acc) normalize)) | |
(reduce [1 1] s))] | |
(get-in keypad [y x]))) | |
(defn -main | |
[] | |
(prn (map find-key data))) |
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