链表和泛型

package *;

import java.util.ArrayList;

public class Liu {
	public static void main(String[] args) {
		String str="1,3,5,0,7,0,12,9,2,0,0,0,0,0,0,0,0,0,0,0";
		String[] strs=str.split(",");
		//遍历选出不为零的长度
		ArrayList<Integer> arrayList=new ArrayList<Integer>();
		for (String s : strs) {
			arrayList.add(new Integer(s));//链表增加元素
		}
		for (int i =arrayList.size()-1; i >=0; i--) {//如果正循环遍历，删除会有问题，数字0无法去除
			if (arrayList.get(i)==0) {
				arrayList.remove(arrayList.get(i));
			}
		}
		for (Integer x: arrayList) {//foreach循环
			System.out.print(x+" ");
		}	
	}
}