package com.vsked.models;

import java.util.ArrayList;

public class Fenye {
	private static  int nowpage;//當前頁
	private static  int pagesize;//一頁顯示行數
	private static  int pagecount;//總頁數;
	private static  ArrayList al;//分頁后的數據
	private static  int startindex;//開始索引
	private static  int endindex;//結束索引
	
	
	public  static ArrayList Fenyeh(ArrayList als,int nowpagein,int pagesizein){
		al=new ArrayList();
//		System.out.println("size:"+als.size());
		nowpage=nowpagein;
		pagesize=pagesizein;
		startindex=(nowpage-1)*pagesize;
		endindex=nowpage*pagesize-1;
		pagecount=als.size()%pagesize==0?als.size()/pagesize:als.size()/pagesize+1;
		if(nowpage<=1){
			nowpage=1;
		}
		if(nowpage>=pagecount){
			nowpage=pagecount;
			endindex=als.size()-1;
		}
		
//		System.out.println("nowpage:"+nowpage+" pagesize:"+pagesize+" pageCount"+pagecount+" start:"+startindex+" end"+endindex);
		
		for(int i=startindex;i<=endindex;i++){
			al.add(als.get(i));			
		}
		return al;		
	}
		
	
}