From 423e707755975f1bafb335266d3aca45d6cd3d6e Mon Sep 17 00:00:00 2001
From: kayac-chang <egg734631@gmail.com>
Date: Thu, 26 Aug 2021 13:23:55 +0800
Subject: [PATCH] add hello solution

---
 2021-08/2021-08-26 (day39)/Hello/solution.js | 9 +++++++++
 1 file changed, 9 insertions(+)
 create mode 100644 2021-08/2021-08-26 (day39)/Hello/solution.js

diff --git a/2021-08/2021-08-26 (day39)/Hello/solution.js b/2021-08/2021-08-26 (day39)/Hello/solution.js
new file mode 100644
index 00000000..b1a80662
--- /dev/null
+++ b/2021-08/2021-08-26 (day39)/Hello/solution.js	
@@ -0,0 +1,9 @@
+/**
+ * @param {number} n
+ * @return {number}
+ */
+function climbStairs(n, dp = [undefined, 1, 2]) {
+  dp[n] ||= climbStairs(n - 1, dp) + climbStairs(n - 2, dp);
+
+  return dp[n];
+}