List<Integer> list = Arrays.asList(1, 1，2，2,3， 3,4， 4, 5，5);对list进行去重

可以使用Java 8的Stream API和Collectors工具类来对list进行去重操作，代码如下：

List<Integer> list = Arrays.asList(1, 1, 2, 2, 3, 3, 4, 4, 5, 5);
List<Integer> distinctList = list.stream().distinct().collect(Collectors.toList());

这样，distinctList就是去重后的list。

相关问题

List<Integer> list = Arrays.asList(1,2,3,4,5,6,7,8,9,10,11,12,13); 随机获取其中的五个元素

您可以使用Collections.shuffle()方法来随机打乱列表元素的顺序，然后通过subList()方法获取前五个元素。下面是示例代码：

import java.util.*;

public class RandomElements {
    public static void main(String[] args) {
        List<Integer> list = Arrays.asList(1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13);
        
        // 打乱列表元素的顺序
        Collections.shuffle(list);
        
        // 获取前五个元素
        List<Integer> randomElements = list.subList(0, 5);
        
        System.out.println("随机获取的五个元素: " + randomElements);
    }
}

这段代码会输出类似以下结果：

随机获取的五个元素: [10, 7, 5, 2, 13]

请注意，每次运行结果都可能不同，因为元素的顺序是随机的。

List<Integer> ids = Arrays.asList(modifyId);

As an AI language model, I cannot determine the exact context of this code snippet. However, I can provide some general explanation.

This line of code creates a new `List<Integer>` object and assigns it to the variable `ids`. The elements of this list are taken from an array `modifyId`, which is passed as an argument to the `Arrays.asList()` method.

The `Arrays.asList()` method is a static method that returns a fixed-size list backed by the specified array. In this case, the `modifyId` array is used to create a new list of integers.

Note that any changes made to the elements of this list will also affect the corresponding elements in the `modifyId` array. Similarly, any changes made to the array itself will also affect the list.