用Java旋转列表
要旋转Java中的列表，让我们首先创建一个List并添加元素-
List < Integer > list = new ArrayList < Integer > (); list.add(5); list.add(10); list.add(15); list.add(20); list.add(25); list.add(30); list.add(35); list.add(40); list.add(45);
现在，旋转列表-
Collections.reverse(list);
示例
import java.util.ArrayList;
import java.util.Collections;
import java.util.List;
public class Demo {
public static void main(String args[]) {
List<Integer>list = new ArrayList<Integer>();
list.add(5);
list.add(10);
list.add(15);
list.add(20);
list.add(25);
list.add(30);
list.add(35);
list.add(40);
list.add(45);
System.out.println("Initial list = "+list);
Collections.reverse(list);
System.out.println("List after rotation = "+list);
}
}输出结果
Initial list = [5, 10, 15, 20, 25, 30, 35, 40, 45] List after rotation = [45, 40, 35, 30, 25, 20, 15, 10, 5]