How to have unique random number?

Question

This is how i am generating a unique no in between 1 to 6 and getting appropriate images from the drawable folder.

Random rand = new Random();
// n = the n         


        

Answer 1

The usual approach to this kind of problem is to create a list containing each of the possible values and shuffle it (use Collections.shuffle). You then consume one item from the list each time you need a value. This will ensure that you don't use the same value more than once but still allows for a random order.