Add q68

Author: davidkun

src/ex/q068.clj

@@ -0,0 +1,8 @@
+;; https://4clojure.oxal.org/#/problem/068
+ 
+(ns ex.q068)
+
+(defn ans
+  "Problem 68, Recurring Theme"
+  []
+  [7 6 5 4 3])

test/ex/q068_test.clj

@@ -0,0 +1,17 @@
+;; https://4clojure.oxal.org/#/problem/068
+ 
+(ns ex.q068-test
+  (:require [clojure.test :as t]
+            [ex.q068 :as sut]))
+
+(defn question
+  []
+  (loop [x 5
+         result []]
+    (if (> x 0)
+      (recur (dec x) (conj result (+ 2 x)))
+      result)))
+
+(t/deftest test-q68
+  (t/testing "Problem 68, Recurring Theme"
+    (t/is (= (question) (sut/ans)))))