From d467425ec4e0e577c7b4d6f3e825aff08cf20e10 Mon Sep 17 00:00:00 2001
From: David Kun <davidkun4@gmail.com>
Date: Fri, 19 Jul 2024 21:04:07 -0400
Subject: [PATCH] Add q9

---
 src/ex/q009.clj       | 8 ++++++++
 test/ex/q009_test.clj | 9 +++++++++
 2 files changed, 17 insertions(+)
 create mode 100644 src/ex/q009.clj
 create mode 100644 test/ex/q009_test.clj

diff --git a/src/ex/q009.clj b/src/ex/q009.clj
new file mode 100644
index 0000000..466fac5
--- /dev/null
+++ b/src/ex/q009.clj
@@ -0,0 +1,8 @@
+;; https://4clojure.oxal.org/#/problem/009
+ 
+(ns ex.q009)
+
+(defn ans
+  "Problem 9, conj on sets"
+  []
+  (conj #{1 4 3} 2))
\ No newline at end of file
diff --git a/test/ex/q009_test.clj b/test/ex/q009_test.clj
new file mode 100644
index 0000000..2a6018a
--- /dev/null
+++ b/test/ex/q009_test.clj
@@ -0,0 +1,9 @@
+;; https://4clojure.oxal.org/#/problem/009
+ 
+(ns ex.q009-test
+  (:require [clojure.test :as t]
+            [ex.q009 :as sut]))
+
+(t/deftest test-q9
+  (t/testing "Problem 9, conj on sets"
+    (t/is (= #{1 2 3 4} (sut/ans)))))
\ No newline at end of file