Store data in memory with collection. Compare memory allocation performance.

Memory collection.java

    private Map<Integer, Person> map;
    private SparseArray<Person> sparseArray;


    //Memory allocation 17.45
    public void onMapBtnClick() {
        map  = new Hashmap();
        for(int i = 0; i< 10000; i++) {
            Person p = new Person(i, "Person " + i);
            map.put(i, p);
        }


//Memory allocation less 15.35
    public void onSparseBtnClick() {
        sparseArray  = new SparseArray<>();
        for(int i = 0; i< 10000; i++) {
            sparseArray.append(i, p);
        }
    }