706. Design HashMap

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problem

solution

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class MyHashMap {
private:
    vector<int> vec;
public:
    MyHashMap() {
        vec = vector<int>(1000001,-1);
    }
    
    void put(int key, int value) {
        vec[key] = value;
    }
    
    int get(int key) {
        return vec[key];
        
    }
    
    void remove(int key) {
        vec[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);
 */