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(ns day04
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(:require [input-manager]
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[clojure.set])
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(:import java.security.MessageDigest java.math.BigInteger))
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(def input (input-manager/get-input-raw 2015 4))
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(defn string->md5 [s]
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(let [algorithm (MessageDigest/getInstance "MD5")
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raw (.digest algorithm (.getBytes s))]
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(format "%032x" (BigInteger. 1 raw))))
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(defn solution [target-prefix]
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(loop [i 0]
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(let [md5 (string->md5 (str input i))]
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(if (.startsWith md5 target-prefix)
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i
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(recur (inc i))))))
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(solution "00000")
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(solution "000000")
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@ -1,14 +0,0 @@
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(ns day05
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(:require [input-manager]
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[clojure.string :as str]))
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(def input (input-manager/get-input 2015 5))
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(def bad #{"ab" "cd" "pq" "xy"})
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;; part 1
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(count (filter #(and (not (some (partial str/includes? %) bad))
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(>= (count (filter #{\a \e \i \o \u} %)) 3)
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(some (partial apply =) (concat (partition 2 %)
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(partition 2 (rest %)))))
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input))
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