Java Example - Rotation Vector

The following example demonstrates the use of the swap() function to rotate a vector:

/*
 author by w3cschool.cc
 Main.java
 */import java.util.Collections;import java.util.Vector;public class Main {
   public static void main(String[] args) {
      Vector v = new Vector();
      v.add("1");
      v.add("2");
      v.add("3");
      v.add("4");
      v.add("5");
      System.out.println(v);
      Collections.swap(v, 0, 4);
      System.out.println("旋转后");
      System.out.println(v);
   }}

1 2 3 4 5 
旋转后
5 2 3 4 1