class MyHashMap { int[] arr; public MyHashMap() { arr = new int[(int) Math.pow(10,6)+1]; Arrays.fill(arr,-1); } public void put(int key, int value) { arr[key] = value; } public int get(int key) { return arr[key]; } public void remove(int key) { arr[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); */