java - Java中如何生成不重复的随机数

Question

我使用它在方法内生成随机数并返回它:

int randomValue = ThreadLocalRandom.current().nextInt(0, filteredArrayList.size());

如何确保不存在连续的两个随机数？我不在乎我是否得到 3，然后是 5，然后再次得到 3。仅当我得到 3，然后得到 3 时。

Answer 1

    int temp = -1; // This will be your value to be compared to random value
    for(int i = 0; i < 10; i++) { // assuming your filteredArraylist is size 10
        int randomValue = ThreadLocalRandom.current().nextInt(0, 10);
        if(randomValue == temp) {
           i--; // it will repeat the generation of random value if temp and randomValue is same
        } else {
           temp = randomValue; // you will put here the ne random value to be compared to next value
           System.out.println(randomValue);
    }