[week2] climbing stairs sold

Author: Hong-Study

climbing-stairs/Hong-Study.cpp

@@ -0,0 +1,18 @@
+class Solution {
+public:
+    int climbStairs(int n) {
+        std::map<int, int> stepMap;
+        stepMap[1] = 1;
+        stepMap[2] = 2;
+
+        if (n == 1) {
+            return stepMap[n];
+        }
+        
+        for (int i = 3; i <= n; i++) {
+            stepMap[i] = stepMap[i - 1] + stepMap[i - 2];
+        }
+
+        return stepMap[n];
+    }
+};