[JAVA] 58. Collection - Queue

1. Queue 예제

package ex13;

import java.util.LinkedList;
import java.util.Queue;

public class Que01 {
    public static void main(String[] args) {
        Queue<Integer> q = new LinkedList<Integer>();

        for (int i = 0; i < 5; i++)
            q.add(i);

        System.out.println("큐의 요소 : " + q);

        int e = q.remove();
        System.out.println("삭제된 요소 : " + e);
        System.out.println(q);
    }
}

2. PriorityQueue

package ex13;

import java.util.LinkedList;
import java.util.PriorityQueue;
import java.util.Queue;

public class Que02 {
    public static void main(String[] args) {
        PriorityQueue<Integer> pq = new PriorityQueue<>();
        pq.add(30);
        pq.add(50);
        pq.add(20);

        System.out.println(pq);
        System.out.println("삭제된 원소 : " + pq.remove());
    }
}