import java.util.ArrayList;
import java.util.Arrays;

public class Ex08RemoveZeroes {

	public static void removeZeroes(ArrayList<Integer> nums) {
		for (int i = nums.size()-1; i >= 0; i--) {
			if (nums.get(i) == 0) {
				nums.remove(i);
			}
		}
	}
	
	public static void main(String[] args) {
		Integer[] nums = { 0, 7, 2, 0, 0, 4, 0 }; 
		ArrayList<Integer> list = new ArrayList<Integer>(
			Arrays.asList(nums)
		);
		System.out.println(list.toString());
		removeZeroes(list);
		System.out.println(list.toString());
	}

}