Reverse a string
For example: input: "cool" output: "looc"
You can not use the
reverse function, but you can use any of the other core functions.
It's possible to submit an incomplete solution so you can see how others have completed the exercise.
(ns reverse-string-test (:require [clojure.test :refer [deftest is]] reverse-string)) (deftest empty-string-test (is (= "" (reverse-string/reverse-string "")))) (deftest a-letter-test (is (= "I" (reverse-string/reverse-string "I")))) (deftest a-word-test (is (= "tobor" (reverse-string/reverse-string "robot")))) (deftest capitalised-word-test (is (= "nemaR" (reverse-string/reverse-string "Ramen")))) (deftest sentence-with-punctuation-test (is (= "!yrgnuh m'I" (reverse-string/reverse-string "I'm hungry!")))) (deftest palindrome-test (is (= "racecar" (reverse-string/reverse-string "racecar")))) (deftest even-sized-word-test (is (= "reward" (reverse-string/reverse-string "drawer")))) (deftest long-string-test (let [s (reduce str (repeat 1000 "overflow?")) rs (reduce str (repeat 1000 "?wolfrevo"))] (is (= rs (reverse-string/reverse-string s)))))
(ns reverse-string) (defn reverse-string [string] (apply str (into '() string)))
A huge amount can be learned from reading other people’s code. This is why we wanted to give exercism users the option of making their solutions public.
Here are some questions to help you reflect on this solution and learn the most from it.