删除数组中的0元素

import java.util.ArrayList;

import java.util.List;

import java.util.Scanner;

public class Main {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

int n=sc.nextInt();

int [] arr=new int[n];

for (int i = 0; i < arr.length; i++) {

arr[i]=sc.nextInt();

}

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

for (int i = 0; i < arr.length; i++) {

if (arr[i]!=0) {

list.add(arr[i]);

}

}

for (int i = 0; i < list.size(); i++) {

System.out.print(list.get(i)+" ");

}

System.out.println();

System.out.println(list.size());

}

}