Java Non-Repeating Random Numbers Generator

In Java, you can use a Set to store randomly generated numbers and ensure that they are not repeated. The specific steps are as follows:

1. Create a Set collection to store the generated random numbers.
2. Generate random numbers using the Random class.
3. Check if the generated random number already exists in the Set collection, if it does, generate a new one until a unique random number is produced.
4. Add unique random numbers to a Set collection.

Here is an example code:

import java.util.HashSet;
import java.util.Random;
import java.util.Set;

public class UniqueRandomNumberGenerator {
    public static void main(String[] args) {
        Set<Integer> set = new HashSet<>();
        Random random = new Random();

        while(set.size() < 10) {
            int randomNumber = random.nextInt(100); // 生成0到99之间的随机数
            if(!set.contains(randomNumber)) {
                set.add(randomNumber);
            }
        }

        System.out.println("随机生成的不重复数字：");
        for(Integer num : set) {
            System.out.println(num);
        }
    }
}

In the example above, we generated and printed 10 unique random numbers. The range and quantity of random numbers generated can be adjusted as needed.