하나의 수조를 고정된 크기에 따라 수조로 나누는 방법

/**
 * 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};// 
		 int splitSize = 5;// 
		 Object[] subAry = splitAry(ary, splitSize);// 
		  
		 for(Object obj: subAry){// 
			 int[] aryItem = (int[]) obj;
			  for(int i = 0; i < aryItem.length; i++){
				  System.out.print(aryItem[i] + ", ");
			  }
			  System.out.println();
		 }

	}

	/**
	 * splitAry <br>
	 * @param ary  
	 * @param subSize  
	 * @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;
		 }
}