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Author: liu-jianhao

Iterator/Iterator.cpp

@@ -0,0 +1,62 @@
+template<typename T>
+class Iterator
+{
+public:
+    virtual void first() = 0;
+    virtual void next() = 0;
+    virtual bool isDone() const = 0;
+    virtual T& current() = 0;
+};
+
+
+
+template<typename T>
+class MyCollection{
+    
+public:
+    
+    Iterator<T> GetIterator(){
+        //...
+    }
+    
+};
+
+template<typename T>
+class CollectionIterator : public Iterator<T>{
+    MyCollection<T> mc;
+public:
+    
+    CollectionIterator(const MyCollection<T> & c): mc(c){ }
+    
+    void first() override {
+        
+    }
+    void next() override {
+        
+    }
+    bool isDone() const override{
+        
+    }
+    T& current() override{
+        
+    }
+};
+
+void MyAlgorithm()
+{
+    MyCollection<int> mc;
+    
+    Iterator<int> iter= mc.GetIterator();
+    
+    for (iter.first(); !iter.isDone(); iter.next()){
+        cout << iter.current() << endl;
+    }
+    
+}
+
+
+
+
+
+
+