作业9-2

package TreeM;  
  
import java.util.*;  
  
public class Treem {  
  
    public static void main(String[] args) {  
        // TODO 自动生成的方法存根  
            TreeMap tm = new TreeMap();  
          
                tm.put(""+1, "a");  
                tm.put(""+3, "s");  
                tm.put(""+5, "ad");  
                tm.put(""+7, "f");  
                tm.put(""+9, "g");  
                tm.put(""+11, "h");  
                tm.put(""+13, "y");  
                tm.put(""+15, "df");  
                tm.put(""+2, "thr");  
                tm.put(""+4, "hgdf");  
                tm.put(""+6, "zasd");  
                tm.put(""+8, "dfg");  
                tm.put(""+10, "sdftg");  
                tm.put(""+12, "edr");  
                tm.put(""+14, "bdfs");  
            Set keySet =tm.keySet();  
            Iterator it =keySet.iterator();  
            while (it.hasNext()) {  
                Object key = it.next();  
                Object valus = tm.get(key);  
                System.out.println(key+":"+valus);  
            }  
            }  
    }  
class MyComparator implements Comparator{  
  
    @Override  
    public int compare(Object o1, Object o2) {  
        // TODO 自动生成的方法存根  
        String id1 = (String) o1;  
        String id2 = (String) o2;  
        return id2.compareTo(id1);  
    }  
      
}