【心得】

1. 之前用過 sort，只能排序 collection 中的數字，今天學到當 collection 中是 string 又想要直接以各自 length 排序時，就可以用到 sort-by

【今日湯底】

Simple, given a string of words, return the length of the shortest word(s).

String will never be empty and you do not need to account for different data types.

（必須通過以下測試）

(ns kata.test
  (:require [clojure.test :refer :all]
            [kata         :refer [find_shortest]]))

(deftest basic-tests
  (is (= (find_shortest "bitcoin take over the world maybe who knows perhaps") 3))
  (is (= (find_shortest "turns out random test cases are easier than writing out basic ones") 3))
  (is (= (find_shortest "lets talk about javascript the best language") 3))
  (is (= (find_shortest "i want to travel the world writing code one day") 1))
  (is (= (find_shortest "Lets all go on holiday somewhere very cold") 2))
)

【我的答案】

(ns kata)

(defn find_shortest [words]
  (->> (clojure.string/split words #" ")
    (sort-by count)
    first
    count)
  )

思路：

1. split 後找到可以 sort string length 的做法
2. 再取出第一個值看 count

【其他人的答案】

(ns kata
  (:require [clojure.string :as str]))

(defn find_shortest [words]
  (->> (str/split words #" ")
       (map count)
       (apply min))
  )