Updating exercises

src/exercises/70.climbing-stairs.js

@@ -0,0 +1,19 @@
+// @leet start
+/**
+ * @param {number} n
+ * @return {number}
+ */
+const fibonacci = (element, cache = []) => {
+            if (element === 0) return 0;
+            if (element === 1) return 1;
+            if (cache[element]) return cache[element];
+            cache[element] = fibonacci(element - 2, cache) + fibonacci(element - 1, cache);
+            return cache[element];
+            }
+var climbStairs = function(n) {
+    
+
+            const array = fibonacci(n + 1)
+            return array
+};
+// @leet end