给定数组，去掉0元素后将剩下的元素赋给新的数组

编程实现给定数组，将数组中值为0的项去掉存入新的数组。

package com.liaojianya.chapter1;
/**
 * This program demonstrates the way to remove zero from old array and insert into new array.
 * @author LIAO JIANYA
 * 2016年7月21日
 */
public class RemoveZero
{
     
    public static void main(String[] args) 
    {
        int k = 0;
        int oldArray[] = {1, 3 , 4, 5, 0, 0, 0, 8, 4, 5, 0, 9, 1};
        System.out.println("------------print oldArray--------------");
        for(int i : oldArray)
        {
            System.out.print(i + " ");
            if(oldArray[i] == 0)
            {
                k++;
            }
        }
        int newArray[] = new int[(oldArray.length - k)];
        int j = 0;
 
         
        for(int i = 0; i < oldArray.length; i++)
        {
            if(oldArray[i] != 0)
            {
                newArray[j] = oldArray[i];
                j++;
            }
        }
 
        System.out.println();
        System.out.println("------------print newArray--------------");
        for(int i : newArray)
        {
            System.out.print(i + " ");
        }
        System.out.println();
        System.out.println("newArray.length = " + newArray.length);
        System.out.println("k = " +  k);    
    }
 
}

　　运行结果：

------------print oldArray--------------
1 3 4 5 0 0 0 8 4 5 0 9 1
------------print newArray--------------
1 3 4 5 8 4 5 9 1
newArray.length = 9
k = 4