leetcode706

class MyHashMap {
public:
    vector<int> hashMap;
    /** Initialize your data structure here. */
    MyHashMap() {
        
    }
    
    /** value will always be non-negative. */
    void put(int key, int value) {
        if(key>=hashMap.size()) {
            for(int i=hashMap.size();i<=key;i++) hashMap.push_back(-1);
        }
        hashMap[key]=value;
    }
    
    /** Returns the value to which the specified key is mapped, or -1 if this map contains no mapping for the key */
    int get(int key) {
        if(key>=hashMap.size()) return -1;
        return hashMap[key];
    }
    
    /** Removes the mapping of the specified value key if this map contains a mapping for the key */
    void remove(int key) {
        if(key>=hashMap.size()) return;
        hashMap[key]=-1;
    }
};