How to Output a Set as Simple Strings?

I need to give an output like this:

/Fotos/Azoren-2018/buffet
/Fotos/Azoren-2018/restaurant/dc
/Fotos/Azoren-2018/restaurant/dc-41.jpg
/Fotos/Azoren-2018/restaurant/dc-42.jpg
/Fotos/Azoren-2018/restaurant/dc-43.jpg
/Fotos/Mallorca-2017/dc-10.jpg
/Fotos/Mallorca-2017/dc-11.jpg
/Fotos/Mallorca-2017/dc-19.jpg

But I think my output is a set:

#{"/Fotos/Mallorca-2017/dc-10.jpg" "/Fotos/Azoren-2018/buffet" "/Fotos/Azoren-2018/restaurant/dc-43.jpg" "/Fotos/Azoren-2018/restaurant/dc-42.jpg" "/Fotos/Mallorca-2017/dc-19.jpg" "/Fotos/Azoren-2018/restaurant/dc-41.jpg" "/Fotos/Mallorca-2017/dc-11.jpg" "/Fotos/Azoren-2018/restaurant/dc"}

Here is my code:

(ns dirdiff.core
  (:gen-class))
(require '[clojure.set])

(defn no-prefix [prefix]
    (comp (filter #(clojure.string/starts-with? % prefix))
          (map #(subs % (count prefix)))))

(defn load-string-set [a file]
    (->> file
         slurp
         clojure.string/split-lines
         (into #{} a))) 

(defn deleted-files
  [prefix-davor prefix-danach davor danach]
  ; TODO
(disj (clojure.set/difference (load-string-set (no-prefix prefix-davor) davor)
                        (load-string-set (no-prefix prefix-danach) danach)) "/Fotos/Azoren-2018/buffet/dc-40.jpg"
"/Fotos/Azoren-2018/buffet/dc-41.jpg"
"/Fotos/Azoren-2018/buffet/dc-42.jpg"
"/Fotos/Azoren-2018/buffet/dc-43.jpg"))
  
(deleted-files "davor" "danach" "resources/davor.txt" "resources/danach.txt")

Here is the test file:

(ns dirdiff.core-test
  (:require [clojure.test :refer :all]
            [dirdiff.core :refer :all]))

(deftest show-deleted-test
  (testing "Find deleted files"
           (let [expected (slurp "resources/erwartet.txt")
                 actual   (deleted-files "davor" "danach" "resources/davor.txt" "resources/danach.txt")]
             (is
               (= expected
                  actual)
               (str "erwartet:\n" expected "\n\nactual:\n" actual)))))

And here is the bash line command window in full version:

cloud9.bewerber2:~/environment/dirdiff $ lein test

lein test dirdiff.core-test

lein test :only dirdiff.core-test/show-deleted-test

FAIL in (show-deleted-test) (core_test.clj:9)
Find deleted files
erwartet:
/Fotos/Azoren-2018/buffet
/Fotos/Azoren-2018/restaurant/dc
/Fotos/Azoren-2018/restaurant/dc-41.jpg
/Fotos/Azoren-2018/restaurant/dc-42.jpg
/Fotos/Azoren-2018/restaurant/dc-43.jpg
/Fotos/Mallorca-2017/dc-10.jpg
/Fotos/Mallorca-2017/dc-11.jpg
/Fotos/Mallorca-2017/dc-19.jpg

actual:
#{"/Fotos/Mallorca-2017/dc-10.jpg" "/Fotos/Azoren-2018/buffet" "/Fotos/Azoren-2018/restaurant/dc-43.jpg" "/Fotos/Azoren-2018/restaurant/dc-42.jpg" "/Fotos/Mallorca-2017/dc-19.jpg" "/Fotos/Azoren-2018/restaurant/dc-41.jpg" "/Fotos/Mallorca-2017/dc-11.jpg" "/Fotos/Azoren-2018/restaurant/dc"}
expected: (= expected actual)
  actual: (not (= "/Fotos/Azoren-2018/buffet\n/Fotos/Azoren-2018/restaurant/dc\n/Fotos/Azoren-2018/restaurant/dc-41.jpg\n/Fotos/Azoren-2018/restaurant/dc-42.jpg\n/Fotos/Azoren-2018/restaurant/dc-43.jpg\n/Fotos/Mallorca-2017/dc-10.jpg\n/Fotos/Mallorca-2017/dc-11.jpg\n/Fotos/Mallorca-2017/dc-19.jpg" #{"/Fotos/Mallorca-2017/dc-10.jpg" "/Fotos/Azoren-2018/buffet" "/Fotos/Azoren-2018/restaurant/dc-43.jpg" "/Fotos/Azoren-2018/restaurant/dc-42.jpg" "/Fotos/Mallorca-2017/dc-19.jpg" "/Fotos/Azoren-2018/restaurant/dc-41.jpg" "/Fotos/Mallorca-2017/dc-11.jpg" "/Fotos/Azoren-2018/restaurant/dc"}))

Ran 1 tests containing 1 assertions.
1 failures, 0 errors.
Tests failed.

I believe the failure is caused because I couldnt give this exact output:

/Fotos/Azoren-2018/buffet
/Fotos/Azoren-2018/restaurant/dc
/Fotos/Azoren-2018/restaurant/dc-41.jpg
/Fotos/Azoren-2018/restaurant/dc-42.jpg
/Fotos/Azoren-2018/restaurant/dc-43.jpg
/Fotos/Mallorca-2017/dc-10.jpg
/Fotos/Mallorca-2017/dc-11.jpg
/Fotos/Mallorca-2017/dc-19.jpg

Any ideas how can I convert that set into this output?

>Solution :

Use sort with clojure.string/join:

(->> #{"/Fotos/Mallorca-2017/dc-10.jpg" "/Fotos/Azoren-2018/buffet" "/Fotos/Azoren-2018/restaurant/dc-43.jpg" "/Fotos/Azoren-2018/restaurant/dc-42.jpg" "/Fotos/Mallorca-2017/dc-19.jpg" "/Fotos/Azoren-2018/restaurant/dc-41.jpg" "/Fotos/Mallorca-2017/dc-11.jpg" "/Fotos/Azoren-2018/restaurant/dc"}
     sort
     (clojure.string/join "\n")
     println)

Output:

/Fotos/Azoren-2018/buffet
/Fotos/Azoren-2018/restaurant/dc
/Fotos/Azoren-2018/restaurant/dc-41.jpg
/Fotos/Azoren-2018/restaurant/dc-42.jpg
/Fotos/Azoren-2018/restaurant/dc-43.jpg
/Fotos/Mallorca-2017/dc-10.jpg
/Fotos/Mallorca-2017/dc-11.jpg
/Fotos/Mallorca-2017/dc-19.jpg
=> nil