public static Pair<Integer, Integer> getMinimumAndIndex(int[] array) {
    if (array == null || array.length == 0) {
        return new Pair<Integer, Integer>(null, null);
    }

    //мой код
    int minimum = Arrays.stream(array).min().getAsInt();
    int index = IntStream.range(0, array.length).filter(i -> minimum == array[i]).findFirst().getAsInt();

    return new Pair<Integer, Integer>(minimum, index);
}