climbing-stairs solution

Author: 이호찬

climbing-stairs/lhc0506.js

@@ -0,0 +1,17 @@
+/**
+ * @param {number} n
+ * @return {number}
+ */
+var climbStairs = function(n) {
+    let preStairs = 0;
+    let curStairs = 1;
+
+
+    for (let i = 0; i < n; i++) {
+        let sum = preStairs + curStairs;
+        preStairs = curStairs;
+        curStairs = sum;
+    }
+
+    return curStairs;
+};