백준[JAVA] 1927.최소 힙 - 자바

📖 문제

📃 코드

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

public class Main {
    static PriorityQueue<Integer> heap = new PriorityQueue<>();
    

    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        int N = Integer.parseInt(br.readLine());

        for(int i=0;i<N;i++){
            int x = Integer.parseInt(br.readLine());
            mHeap(x);
        }
    }

    private static void mHeap(int x) {
        if(x == 0){
            if(heap.size() == 0){
                System.out.println(0);
            }else {
                System.out.println(heap.remove());
            }
        }else{
            heap.offer(x);
        }
    }
}

 

🔗 링크

https://www.acmicpc.net/problem/1927

1927번: 최소 힙