深入浅析Collections工具类

public void testSort() {    System.out.println("原始顺序：" + list);    Collections.reverse(list);    System.out.println("reverse后顺序：" + list);    Collections.shuffle(list);    System.out.println("shuffle后顺序：" + list);    Collections.swap(list, 1, 3);    System.out.println("swap后顺序：" + list);    Collections.sort(list);    System.out.println("sort后顺序：" + list);    Collections.rotate(list, 1);    System.out.println("rotate后顺序：" + list);  }