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Java code:

List list = new ArrayList();
List list1 = new ArrayList();
list.add("a");
list.add("b");
list.add("b");
list.add("e");
list.add("i");
list.add("v");
list.add("p");
list.add("a");
list.add("b");
list.add("b");
list.add("e");
list.add("i");
list.add("v");
list.add("p");
Set set = new HashSet();

set.addAll(list);


for(java.util.Iterator it = set.iterator(); it.hasNext(); )
{
list1.add(it.next());
}
java.util.Collections.sort(list1);
System.out.println(list1);


ÔËÐнá¹û£º[a, b, e, i, p, v]

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