import java.util.HashSet;import java.util.Set;public class Demo{public static void main(String[] args) {Set list = new HashSet();list.add(1);list.add(5);list.add(3);list.add(4);list.add(5);System.out.println(list);}}输出结果
A. [1,5,3,4,5]
B. [1,5,3,4]
C. [1,3,4,5]
D. [1,3,4,5,5]