testsort.java

疯狂Java讲义_源码(含Java设计模式CHM

import java.util.*;

/**
 * Description:
 * <br/>Copyright (C), 2005-2008, Yeeku.H.Lee
 * <br/>This program is protected by copyright laws.
 * <br/>Program Name:
 * <br/>Date:
 * @author  Yeeku.H.Lee [e-mail]
 * @version  1.0
 */
public class TestSort
{
	public static void main(String[] args) 
	{
		ArrayList nums = new ArrayList();
		nums.add(2);
		nums.add(-5);
		nums.add(3);
		nums.add(0);
		//输出:[2, -5, 3, 0]
		System.out.println(nums);
		//将List集合元素的次序反转
		Collections.reverse(nums);
		//输出:[0, 3, -5, 2]
		System.out.println(nums);
		//将List集合元素的按自然顺序排序
		Collections.sort(nums);
		//输出:[-5, 0, 2, 3]
		System.out.println(nums);
		//将List集合元素的按随机顺序排序
		Collections.shuffle(nums);
		//每次输出的次序不固定
		System.out.println(nums);
	}
}