getvalidserver.java

来自「自己实现的AES和DES的加密算法。自己可以随意组成加密数据结构」· Java 代码 · 共 35 行

package com.cmcc.web.util;

import java.util.ArrayList;
import java.util.List;
import java.util.Random;

public class GetValidServer {
	List<ServerList> unSelList = new ArrayList<ServerList>();
	List<ServerList> selList = new ArrayList<ServerList>();
	List<ServerList> totalList = new ArrayList<ServerList>();

	// 得到列表
	public ServerList getUserList() {
		// 随机选择一个
		int random = getRandom(unSelList.size());
		ServerList user = (ServerList) unSelList.get(random);
		// 加入已选择列表
		selList.add(user);
		// 从未选择列表中删除
		unSelList.remove(random);
		return user;
	}

	// 随机选择
	private int getRandom(int size) {
		Random rand = new Random();
		return Math.abs(rand.nextInt()) % size;
	}

	public void setTotalList(List<ServerList> totalList) {
		this.totalList = new ArrayList<ServerList>(totalList);
		this.unSelList = new ArrayList<ServerList>(totalList);
	}
}