android - 生成随机数而不重复

import java.util.Random;

public class RandomNumberGenerator {
    public static void main(String[] args) {
        int[] numbers = new int[10];
        Random random = new Random();

        for (int i = 0; i< numbers.length; i++) {
            int randomNumber = random.nextInt(100);
            while (contains(numbers, randomNumber)) {
                randomNumber = random.nextInt(100);
            }
            numbers[i] = randomNumber;
        }

        for (int number : numbers) {
            System.out.println(number);
        }
    }

    public static boolean contains(int[] array, int value) {
        for (int i : array) {
            if (i == value) {
                return true;
            }
        }
        return false;
    }
}

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

public class RandomNumberGenerator {
    public static void main(String[] args) {
        int count = 10;
        Set<Integer> numbers = new HashSet<>();
        Random random = new Random();

        while (numbers.size()< count) {
            numbers.add(random.nextInt(100));
        }

        for (int number : numbers) {
            System.out.println(number);
        }
    }
}