集减法 : 设置 « 集合数据结构 « Java

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Java 教程
Java » 集合数据结构 » 设置屏幕截图 
集减法
集减法
  
import java.util.HashSet;
import java.util.Set;

public class FindDupsAndUnique {
  public static void main(String args[]) {
    Set uniques = new HashSet();
    Set dups = new HashSet();
    String[] values = new String[] { "java", "java2", "java2s", "javas",
    "java" };
    for (int i = 0; i < values.length; i++)
      if (!uniques.add(values[i]))
        dups.add(values[i]);

    uniques.removeAll(dups); // Destructive set-difference

    System.out.println("Unique words:    " + uniques);
    System.out.println("Duplicate words: " + dups);
  }
}


           
         
    
  
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1. 集， HashSet和TreeSet
2. Things you can do with SetsThings you can do with Sets
3. Set operations: union, intersection, difference, symmetric difference, is subset, is superset
4. Putting your own type in a SetPutting your own type in a Set
5. 使用SET使用SET
6. Another Set demo
7. Working with HashSet and TreeSetWorking with HashSet and TreeSet
8. TreeSet演示TreeSet演示
9. Show the union and intersection of two sets
10. Demonstrate the Set interface
11. TreeSet Test
12. Array Set extends AbstractSetArray Set extends AbstractSet
13. Sync Test
14. Set Copy
15. 集和TreeSet
16. Tail
17. What you can do with a TreeSetWhat you can do with a TreeSet
18. Remove all elements from a set
19. Copy all the elements from set2 to set1 (set1 += set2), set1 becomes the union of set1 and set2
20. Remove all the elements in set1 from set2 (set1 -= set2), set1 becomes the asymmetric difference of set1 and set2
21. Get the intersection of set1 and set2, set1 becomes the intersection of set1 and set2
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