백준[JAVA] 10773.제로 - 자바

📖 문제

📃 코드

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
    static int arr[];
    static BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
    public static void main(String[] args) throws IOException {
        
        int N = Integer.parseInt(br.readLine());
        arr = new int[N];
        zero(N);
        int sum = 0;
        for(int num : arr){
            sum += num;
        }
        System.out.println(sum);
    }

    private static void zero(int n) throws IOException{
        int index = 0;
        while(n>0){
            int num = Integer.parseInt(br.readLine());
            if(num != 0){
                arr[index] = num;
                index++;
            }else {
                arr[index-1] = 0;
                index--;
            }
            n--;
        }
    }
}

🔗 링크

https://www.acmicpc.net/problem/10773

10773번: 제로