How to find array index of largest value?

Question

The title above sums up my question, to clarify things an example is:

array[0] = 1
array[1] = 3
array[2] = 7  // largest
array[3] = 5

so th

Answer 1

one way will be:

 Integer[] array = new Integer[4];
    array[0] = 1;
    array[1] = 3;
    array[2] = 7;
    array[3] = 5;

    List<Integer> iList = Arrays.asList(array);
    System.out.println(iList.indexOf(Collections.max(iList)));
    System.out.println(iList.indexOf(Collections.min(iList)));

Answer 2

Using Java 8 streams:

    List<Integer> list = Arrays.asList(1, 3, 7, 5);
    IntStream.range(0, list.size())
            .reduce((i, j) -> list.get(i) > list.get(j) ? i : j)
            .getAsInt();