@Override
    public boolean equals(final Object o) {
        if (o == null) {
            return false;
        }
        if (!(o instanceof ArrayMap)) {
            return false;
        }
        @SuppressWarnings("unchecked")
        final ArrayMap<K, V> e = (ArrayMap<K, V>) o;
        if (size != e.size) {
            return false;
        }
        for (int i = 0; i < size; i++) {