Java程序获得与NavigableSet相反的结果
我们将创建一个NavigableSet集合并添加一些元素-
NavigableSet<String> set = new TreeSet<>();
set.add("ABC");
set.add("DEF");
set.add("GHI");
set.add("JKL");
set.add("MNO");
set.add("PQR");
set.add("STU");现在，将其descendingSet()用于NavigableSet的反向操作-
NavigableSet<String>reverse = set.descendingSet();
示例
import java.util.NavigableSet;
import java.util.TreeSet;
public class Demo {
public static void main(String[] args) {
NavigableSet<String> set = new TreeSet<>();
set.add("ABC");
set.add("DEF");
set.add("GHI");
set.add("JKL");
set.add("MNO");
set.add("PQR");
set.add("STU");
NavigableSet<String>reverse = set.descendingSet();
System.out.println("NavigableSet = " + set);
System.out.println("NavigableSet (Reverse) = " + reverse);
}
}输出结果
NavigableSet = [ABC, DEF, GHI, JKL, MNO, PQR, STU] NavigableSet (Reverse) = [STU, PQR, MNO, JKL, GHI, DEF, ABC]