How can I find the maximum value and its index in array in MATLAB?

Question

Suppose I have an array, a = [2 5 4 7]. What is the function returning the maximum value and its index?

For example, in my case that function should ret

Answer 1

In case of a 2D array (matrix), you can use:

[val, idx] = max(A, [], 2);

The idx part will contain the column number of containing the max element of each row.