package math;
import java.util.HashSet;
import java.util.Set;
public class Test {
  public static void main(String[] args) {
    Set<Integer> result = new HashSet<Integer>();
    Set<Integer> set1 = new HashSet<Integer>(){{
      add(1);
      add(3);
      add(5);
    }};
    Set<Integer> set2 = new HashSet<Integer>(){{
      add(1);
      add(2);
      add(3);
    }};
    result.clear();
    result.addAll(set1);
    result.retainAll(set2);
    System.out.println("编程素材网测试结果：");
    System.out.println("交集："+result);
    result.clear();
    result.addAll(set1);
    result.removeAll(set2);
    System.out.println("差集："+result);
    result.clear();
    result.addAll(set1);
    result.addAll(set2);
    System.out.println("并集："+result);
  }
}