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 the result I would like is 2, since it contains the largest element 7.

Answer 1

int maxAt = 0;

for (int i = 0; i < array.length; i++) {
    maxAt = array[i] > array[maxAt] ? i : maxAt;
}

Answer 2

Another functional implementation

int array[] = new int[]{1,3,7,5};        

int maxIndex =IntStream.range(0,array.length)
              .boxed()
              .max(Comparator.comparingInt(i -> array[i]))
              .map(max->array[max])
              .orElse(-1);