I have a list of array of 2 objects:

```
List<Object[2]>

```

Where object[0] is an Integer and object[1] is a String.

How can I stream the list and apply different functions on each object?
So that, the result will be an array having:

```
result[0] = multiplication of all object[0]
result[1] = concatenation of all object[1]

```