2 files changed, 38 insertions, 0 deletions
diff --git a/entries/jyoo980/aspectj/Fibonacci.aj b/entries/jyoo980/aspectj/Fibonacci.aj
new file mode 100644
index 0000000..39dfd8a
--- /dev/null
+++ b/entries/jyoo980/aspectj/Fibonacci.aj
@@ -0,0 +1,21 @@
+public aspect Fibonnacci {
+
+    pointcut mainInvocation(): call(* Main.*(*));
+
+    void before(): mainInvocation() {
+        // Nice
+        int n = 69;
+        System.out.println("The 69th fibonacci number is: " + fibonacci(n));
+    }
+
+    public int fibonacci(int n) {
+        int prev = 0;
+        int curr = 1;
+        for (int i = 0; i < n; i++) {
+            int tmp = prev;
+            prev = curr;
+            curr = prev + tmp;
+        }
+        return prev;
+    }
+}
diff --git a/entries/jyoo980/vintage-htdp/fib.rkt b/entries/jyoo980/vintage-htdp/fib.rkt
new file mode 100644
index 0000000..697c17b
--- /dev/null
+++ b/entries/jyoo980/vintage-htdp/fib.rkt
@@ -0,0 +1,17 @@
+;; Natural -> Natural
+;; given n, produce the nth fibonacci number
+(check-expect (fib 0) 0)
+(check-expect (fib 1) 1)
+(check-expect (fib 2) 1)
+(check-expect (fib 7) 13)
+
+; (define (fib n) 0) ; stub
+
+;<template from Natural>
+(define (fib n)
+  (cond
+    [(zero? n) 0]
+    [else
+    (if (= n 1)
+        1
+        (+ (fib (sub1 n)) (fib (- n 2))))]))