Set与List转换

package set;

import java.util.ArrayList;
import java.util.Collections;
import java.util.HashSet;
import java.util.LinkedHashSet;
import java.util.LinkedList;
import java.util.List;
import java.util.Set;
import java.util.Vector;

public class ReverseLinkedHashSet {

    public static void main(String args[]){
        testSetConvertList();
        testListConvertSet();
    }
    static void testSetConvertList(){
        Set<Integer> hashSet = new HashSet<Integer>();
        Set<Integer> linkedHashSet = new LinkedHashSet<Integer>();
        for(int i=1 ;i<20;i++){
            hashSet.add(i);
            linkedHashSet.add(i);
        }
        System.out.println("hashSet: "+hashSet);
        System.out.println("linkedHashSet: "+linkedHashSet);
        List<Integer> hashSetList = new ArrayList<Integer>(hashSet);
        List<Integer> linkedHashSetList = new ArrayList<Integer>(linkedHashSet);
        System.out.println("hashSet转list集合： "+hashSetList);
        System.out.println("linkedHashSet转list集合： "+linkedHashSetList);
        Collections.reverse(linkedHashSetList);
        System.out.println("旋转linkedHashSetList集合： "+linkedHashSetList);
    }
    
    @SuppressWarnings("serial")
    static void testListConvertSet(){
        List<Integer> vector = new Vector<Integer>();
        List<Integer> linkedList = new LinkedList<Integer>();
        List<Integer> dataList1 = new LinkedList<Integer>(){{add(1);add(2);add(2);add(4);add(5);}};
        List<Integer> dataList2 = new LinkedList<Integer>(){{add(7);add(6);add(16);add(17);add(18);add(19);add(19);}};
        List<Integer> dataList3 = new LinkedList<Integer>(){{add(11);add(12);add(13);add(14);add(15);}};
        
        vector.addAll(dataList1);
        vector.addAll(dataList2);
        vector.addAll(dataList3);
        linkedList.addAll(dataList1);
        linkedList.addAll(dataList2);
        linkedList.addAll(dataList3);
        System.out.println("vector: "+vector);
        System.out.println("linkedList: "+linkedList);
        Collections.sort(vector);
        System.out.println("排序vector: "+vector);
        Collections.shuffle(vector);
        System.out.println("随机排序vector: "+vector);
        Collections.sort(vector);
        System.out.println("排序vector: "+vector);
        Collections.reverse(vector);
        System.out.println("反转排序vector: "+vector);
        Set<Integer> hashSet = new HashSet<Integer>(linkedList);
        Set<Integer> linkedSet = new LinkedHashSet<Integer>(linkedList);
        System.out.println("hashSet: "+hashSet);
        System.out.println("linkedSet: "+linkedSet);
    }
}