What is the most efficent way to generate unique double values in Java

Question

There are methods such as searching for duplicates but I wonder if there is a better solution for this task.

Answer 1

You can use Set collection. It won't allow insertion of unique values. Below is an example:

Set doubles = new HashSet();
Random r = new Random();
for(int i=0 ; i<100 ; i++){
    doubles.add(r.nextDouble() * 100);
}