/**
 * ArraySplit.java
 * Copyright(C) 2014
 */
package com.udpdemo.test2;

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

/**
 * 
 * @author cuiran
 * @version 1.0.0
 */
public class ArraySplit {

 /**
  * @param args
  * 
  */
 public static void main(String[] args) {
  // TODO Auto-generated method stub

   int[] ary = {0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20};//要分割的数组
   int splitSize = 5;//分割的块大小
   Object[] subAry = splitAry(ary, splitSize);//分割后的子块数组
    
   for(Object obj: subAry){//打印输出结果
    int[] aryItem = (int[]) obj;
     for(int i = 0; i < aryItem.length; i++){
      System.out.print(aryItem[i] + ", ");
     }
     System.out.println();
   }

 }

 /**
  * splitAry方法<br>
  * @param ary 要分割的数组
  * @param subSize 分割的块大小
  * @return
  *
  */
 private static Object[] splitAry(int[] ary, int subSize) {
   int count = ary.length % subSize == 0 ? ary.length / subSize: ary.length / subSize + 1;

   List<List<Integer>> subAryList = new ArrayList<List<Integer>>();

   for (int i = 0; i < count; i++) {
    int index = i * subSize;
    List<Integer> list = new ArrayList<Integer>();
    int j = 0;
     while (j < subSize && index < ary.length) {
      list.add(ary[index++]);
      j++;
     }
    subAryList.add(list);
   }
   
   Object[] subAry = new Object[subAryList.size()];
   
   for(int i = 0; i < subAryList.size(); i++){
     List<Integer> subList = subAryList.get(i);
     int[] subAryItem = new int[subList.size()];
     for(int j = 0; j < subList.size(); j++){
      subAryItem[j] = subList.get(j).intValue();
     }
     subAry[i] = subAryItem;
   }
   
   return subAry;
   }
}