Watermelon

Pete and Billy are great fans of even numbers, that's why they want to divide the number of watermelons in such a way that each of the two parts consists of an even number of watermelons. However, it is not obligatory that the parts are equal.

Example: the boys can divide a stack of 8 watermelons into 2+6 melons, or 4+4 melons.

切西瓜，只能切成偶數加偶數，若給予的數字不能分為偶數加偶數，則回傳 false

Solution

(ns kata)
(defn divide [n]
  (cond
    (= n 2) false
    (= 0 (rem n 2)) true 
    :else false)
)

Complementary DNA

翻譯 DNA

Solutions

(ns complementary-dna)

(defn dna-strand [dna]
  (clojure.string/replace dna #"A|T|C|G" {"A" "T" "T" "A" "C" "G" "G" "C"})
)

(ns complementary-dna)

(defn dna-strand [dna]
    (apply str (map {\A \T \C \G \G \C \T \A} dna)))