I have 3 arrays of integer for example:

```
int[] l1 = {1,2,3};
int[] l2 = {4,5,6};
int[] l3 = {7,8,9};

```

and I have an integer witch shows me a number between 1 to 3 , I want know how to relate this number to arrays I mean if it was 2 then chose the second array to work with