diff --git a/09. Hashing/5. design_hash_map.cpp b/09. Hashing/5. design_hash_map.cpp
new file mode 100644
index 00000000..9860a2da
--- /dev/null
+++ b/09. Hashing/5. design_hash_map.cpp	
@@ -0,0 +1,27 @@
+class MyHashMap {
+    vector <int> mapArray;
+public:
+    MyHashMap() {
+        mapArray=vector<int>(1000001,-1);
+    }
+    
+    void put(int key, int value) {
+        mapArray[key]=value;
+    }
+    
+    int get(int key) {
+        return mapArray[key];
+    }
+    
+    void remove(int key) {
+        mapArray[key]=-1;
+    }
+};
+
+/**
+ * Your MyHashMap object will be instantiated and called as such:
+ * MyHashMap* obj = new MyHashMap();
+ * obj->put(key,value);
+ * int param_2 = obj->get(key);
+ * obj->remove(key);
+ */