从Java中的NavigableMap获取下键
获得较低的键意味着返回的最大键严格小于给定的键。这可以使用lowerKey()方法来完成。
以下是从NavigableMap获取下调键的示例-
示例
import java.util.*;
public class Demo {
public static void main(String[] args) {
NavigableMap<Integer, String> n = new TreeMap<Integer, String>();
n.put(5, "Tom");
n.put(9, "John");
n.put(14, "Jamie");
n.put(1, "Tim");
n.put(4, "Jackie");
n.put(15, "Kurt");
n.put(30, "Tiger");
n.put(24, "Jacob");
System.out.println("NavigableMap elements...\n"+n);
System.out.println("Lower Key = "+n.lowerKey(11));
}
}输出结果
NavigableMap elements...
{1=Tim, 4=Jackie, 5=Tom, 9=John, 14=Jamie, 15=Kurt, 24=Jacob, 30=Tiger}
Lower Key = 9