作业帮public class TreeMapDemo { public static void main(String[] args) {TreeMap tr=new TreeMap(new Mycomparator()); tr.put("A", 12); tr.put("B", 13); tr.put("C", 14); tr.put("D", 15); System.out.println(tr); } } class Mycomparator implements Comparator{ @
来源：学生作业帮助网 编辑：作业帮 时间：2024/07/30 18:17:51
![public class TreeMapDemo { public static void main(String[] args) {TreeMap tr=new TreeMap(new Mycomparator()); tr.put(](/uploads/image/z/8729683-43-3.jpg?t=public+class+TreeMapDemo+%7B+public+static+void+main%28String%5B%5D+args%29+%7BTreeMap+tr%3Dnew+TreeMap%28new+Mycomparator%28%29%29%3B+tr.put%28%22A%22%2C+12%29%3B+tr.put%28%22B%22%2C+13%29%3B+tr.put%28%22C%22%2C+14%29%3B+tr.put%28%22D%22%2C+15%29%3B+System.out.println%28tr%29%3B+%7D+%7D+class+Mycomparator+implements+Comparator%7B+%40)
public class TreeMapDemo { public static void main(String[] args) {TreeMap tr=new TreeMap(new Mycomparator()); tr.put("A", 12); tr.put("B", 13); tr.put("C", 14); tr.put("D", 15); System.out.println(tr); } } class Mycomparator implements Comparator{ @
public class TreeMapDemo { public static void main(String[] args) {
TreeMap tr=new TreeMap(new Mycomparator()); tr.put("A", 12); tr.put("B", 13); tr.put("C", 14); tr.put("D", 15); System.out.println(tr); } } class Mycomparator implements Comparator{ @Override public int compare(Object o,Object oo) { String s1=(String)o; String s2=(String)oo; return s2.compareTo(s1); } } 我问下,这加入 new Mycomparator() 的作用在哪边?我把他删除了.照样可以输出这些数啊!求解
public class TreeMapDemo { public static void main(String[] args) {TreeMap tr=new TreeMap(new Mycomparator()); tr.put("A", 12); tr.put("B", 13); tr.put("C", 14); tr.put("D", 15); System.out.println(tr); } } class Mycomparator implements Comparator{ @
比较器 多用来排序